>Maybe your aren't familiar with Who, but one of the core elements is that the Doctor "regenerates" every few years. New actor, new personality, but common elements and memories.
You might not know how this worked in the UK. Everybody has a first Doctor, mine being John Pertwee.
>So any attributes like race or gender are temporary. It's been established that Time Lords can change gender when regenerating, before The Doctor did it. Well, you can't read too much into canon... One Time Lord used regeneration to try on different looks, like she was trying on different outfits, and then settled in looking like a princess they had recently met.
In the mainstream series, which most people know, there were over fifty years of the Doctor being as people knew him. Then in a short few years he's a woman, a black woman, then a gay black man. Those on the rewrite side of history may try to spin an alternative history to justify this, yet normal people see it for what it is. It's a long running British character being bastardised by identitarians, and it's not going to work. Although these things get lauded by your kind, it fails at the point where it needs normal people to provide their money/time. Doctor Who, like Star Wars and Marvel is headed to apathy. There just aren't enough of your kind to support these revisionist projects. At least by creating new things, with budgets targeting racist/sexist minorities there'd be a hope of profit.