The funny thing is, the PT-haters are obsessing over what is just a Saturday Morning cartoon in film format. Four out of six SW movies are just like that, with the only exceptions being Revenge of the Sith and Empire Strikes Back where the bad guys are taken more seriously. But at the end of the day, they're attacking the Prequels because they want to relive the joy they felt seeing the OT for the first time, but they can't.
The PT-haters see the PT as adults and see all the flaws, and they don't realize that the OT had similar flaws as well, such as the dialogue, (Harrison Ford and Alec Guinness both hated it) dropped plotlines, (whatever happened to Vader's offer to Luke on toppling the Emperor?) to them rushing things to the finish line. (LOL where did the massive Imperial Fleet go? What kind of government did our heroes make? Did they rebuild the Republic, or just seat Leia on Palpatine's throne?) The fact that the SWEU had to go on overdrive patching those plot holes and answering people's questions about the films pretty much shows how the extended material had to make up for the shortcomings of the films.
If you look at the Boomers who saw Star Wars as adults when it first came out, and compare them to Gen Z adults who are seeing Star Wars now, for the first time, with no knowledge of the franchise, their reactions are similar: they like both the OT and the PT. Those who aren't that into them just saw them as technological wonders with a basic story of good vs. evil. Those who are into them love the world-building and lore of both trilogies, seeing them as one indivisible whole. Unlike Gen X, they didn't grow to hate the Prequels, but put the OT on a pedestal.
The Millennials had it the other way around; they saw both trilogies as kids, with the release of the Special Editions in the 90s, and the Prequels in the late 90s/early 2000s. So they had nostalgia for both trilogies, and they loved both of them. Typically, they were the defense force for the Prequels that were belittled by Gen X whose answer to their Prequel love is that they were blinded by nostalgia. Not realizing that the same argument could easily be used against them.
The problem is, the Gen Z/Boomer experience proves the PT haters wrong; here you have two crowds, separated by 50 years, who saw Star Wars for the first time as adults, and their judgement of the Prequel and Original Trilogies is that they're both the same. Kids' cartoons with a budget and great special effects, in film format, with live actors. They didn't see much difference between the two outside of the PT having better CGI, and at the end of the day, many Boomers and Gen Z-ers accepted both trilogies as the classical part of the franchise.
The haters of the Prequels are typically Gen X, and sometimes, you may also have some older Millennials, and they're isolated, trapped between the Boomers who see both trilogies as kiddie cartoons in live action and see no difference between the OT and the PT, and the younger Millennials and Gen Z-ers who love both the OT and the PT. And of course, the latter are passing on their views to Gen Alpha, who are likewise having the same experience that the younger Millennials had, although most of them are more into Baby Yoda or the cartoons.
Of course, this just means the PT-haters got meaner and started laying on hate on people who like the Prequels or say they're better than the Sequels, but that just makes people hate them more. Big shock, when you react to people with hatred due to their opinions, they tend to hate you right back. Just like videos dunking on feminists and SJWs became a thing in the past, dunking on Prequel-haters has become its own genre of Youtube video.
As for the Sequels, the fact that they had no narrative structure, no morals or sagas to tell, and the fact that they're jumping all over the place in terms of tone pretty much guaranteed that they'd not even be hated, but forgotten, with time. Note how the Sequels right now aren't even being hated by PT fans and the like; it's usually the politically active instead who hate them for the MaRey Sue feminist thing. Your typical PT or OT fan feels nothing for them. Outside of some PT-haters who think TFA was a step in the right direction.
Something worse is happening to the Sequels-they're just being forgotten. The one group that might have given a shit about them are the Reylos, the people who shipped Kylo Ren with Rey, since the first two Sequel movies are, in essence, a violent foreplay between the two. But the third Sequel killing off Kylo Ren broke the Reylos' hearts. So they'd rather not revisit the site of their heartbreak, and they too would rather forget the Sequels ever existed. So unlike the PT which had its renaissance, the ST would rather be forgotten, especially since they really disappointed everyone involved.
But yes, the problem with the PT-haters isn't so much their obsessive hate against Lucas, it's just that they really wanted to revisit their childhood when they first saw the SW movies, and that's just impossible. I mean, sometimes even I want to go back to my youth when it was me being awed by giant robots blasting each other with Kame-hame-ha style energy weapons. But even I have to realize that I have to grow up and trying to recreate that first-time wonder is impossible. I rewatch the giant robot cartoons of my youth, and I see the flaws in pacing, character motivations, even the omni-present hand of toy companies using them as advertisements, but I still enjoy them for what they were and the fun I had with them. I learn to accept them, flaws and all.
And I'll repeat my take:
The Prequels are good movies that got fucked up in their execution. AotC is the most clear example of this - the story/story beats are great, but turning those broadstrokes into fine detail are where the problems developed.
I say, they could've worked better as TV shows. I mean, give us a whole season to explain WHY the Trade Federation would crash out over their trade routes getting taxed. A lore blurb in the intro is fine, but it would work better if we see how and why shit happened. Especially since after the OT, a lot of the Star Wars faithful had to read up on books to see what the fuck happened after the films. A TV show leading up to the PT release should've been done.