Fans didn't accept all of those changes. Many didn't like the war doctor or that galifrey had survived. Bad continuity and constant ret-conning is one thing about Doctor Who that has irritated me. It has some of the worst continuity.When was it first established that the Doctor wasn't human? That he could regenerate? That he had two hearts? That he was a Time Lord? That he was from Gallifrey? That he had a frenemy called The Master? That he was half human on his mother's side? That he was the last of the Time Lords? That he had an unknown incarnation we know as the War Doctor? That he wasn't the last of the Time Lords?
None of that was there from the beginning of the show. Writers and producers came up with new ideas that added to his backstory and character and fans accepted them. This is another of those new ideas. Years from now people will read about today and be surprised that anyone saw this development as any different from any of the above changes.
Helpful suggestion: if you're going to bang on about political correctness, you're admitting you have nothing of value to add to the conversation, and you obviously haven't been reading the thread.
The characters traits have changed with each new regeneration but the one constant besides some zanyness and a need to help other people/species was he was male and basically the same person. Now we find out there is has no gender at all. So with the regenerations except for a few basic emotions and memories the character is pretty much completely different. But yeah maybe you are right and this development will just be part of the already confusing backstory of the doctor and eventually fully accepted.
Still I wish they would just stick to a set of rules for the character instead of constantly trying to reinvent.