I haven't kept up with any of the Byuu stuff more recently, but when it first came out my take on it was that his suicide threat was an entirely performative act and he planned on taking his money and poofing with the expectation that Null and his evil, murderous website full of crazy sociopaths would end up being taken down as a result. Then, when the coast was clear, he'd be able to pop up again like a demented gopher and continue on his merry way.
Or, even more alternate he just did the entire thing to make a clean slate for himself and rebuild himself as someone else enitrely. Of course, he failed at the extortion attempt and aside from the splurge of DDOS that are related and unrelated to the Byuu situations I haven't noticed much in the way of the site dying or even having to pause to give a near death fart. Not being able to access the site every now and then is hardly going to keep me from revisiting it when I'm interested in seeing what's changed about people and what others thoughts on them are.
His attempt to use Byuu as the "COINCIDENCE? I THINK NOT" was undercut by him omitting the information about there being a mysterious lack of a corpse or any actual proof Byuu had indeed killed himself, and the fact Byuu had tried to extort Null with his "suicide" as the weapon.
Russell attempting to pull the suicide shtick for himself as a way to try and force his case through in any means most likely would not end in the way he would want it to, as even lawyers are allowed to take necessary steps to intervene by contacting necessary adult services and the such. I am not an expert on the courts but I'd imagine pro se wouldn't keep that safe from the judge.
He admitted now in this filing he had an altercation with his own lawyer which finally explained why in the video call we obtained back then he had been a sweaty, fuming mess that wasn't allowed to speak less he shove his foot further down his throat than his lawyer could walk back. He also took the evaluation stuff as an insult, so I'm sure if his threat was met with any sort of pushback he'd start frothing because that wasn't how it was supposed to go like it did in his head.