This annoys me on so many levels.
First & foremost, I can't stand when a classic character is fundamentally changed simply to pander to SJWs. The thinking seems to be "we've got this great character, let's change everything about him!"
It also demonstrates how little creativity the writers possess. They decide that because they lack enough minorities of some type, they remake an established character rather than create new characters of the desired group. Even worse is that they are ignoring already established characters which could flesh out the story.
It's offensive to both sexes to make them interchangeable. Men & women each have special & unique attributes. Making them essentially the same dilutes both.
Susan, Romana & the Rani are all fascinating Time Ladies. Each would be an excellent supporting character & any could easily be the main character in their own show.
Finally, why should the Doctor becoming a woman be an inspiration for girls? If anything, it suggests that they're not as good as boys. It says that if there's enough whining & pressure, a girl can be given a boy's role.
The modern Doctor Who series has gotten very preachy & left wing. It's so intent on pushing an agenda that it has abandoned it's sci fi roots. I have been hearing modern fans decry how sexist the show is, yet don't seem to realize how many strong female characters existed in the show's run, nor that a woman was involved with its creation & production in the early years.
I suspect Doctor Who will soon become more gimmick & will continue to decline as viewers tire of the lack of plot.