I don't need to go into all the details, but I am behind on Who a few eras, and trying to catch up, but I have seen a few of the very newest episodes, and I know a *bit* about the row over "The Timeless Child", even though I haven't yet had a chance to see it you.
And so I have had a hard time following the details, and most of the written complaints online and youtube videos critical of it seem to be pretty blatantly sexist and racist so I haven't been able to watch them all the way though (anytime your criticism devolves into using phrases like "social justice warrior, "woke", "feminist", etc...you're not worth listening to, imho)....
I have no problem with a female Doctor,and it's been known and suspected and even outright *stated* that there are big mysteries and secrets in the Doctor's past, and surrounding his identity. Secrets that could destroy worlds.
But I have come across a criticism that I do agree with, if what I have heard is true:
Basically it revolves around the same criticism of the Rey story-arc resolution in Star Wars. The idea that no, you aren't just a normal person that had it in you to rise to greatness (thus WE ALL, including me and you, have that power too)...no, it's not that you CHOSE to be who you are.
No...like Paul in Dune and Garfield's (otherwise really good) Spiderman...you were basically destined for this all along. You are magic and special. It was fate. Yada yada.
That whole "Chosen One" thing was cool when I was a child. I was odd and different and bullied for it. I didn't fit in, and my dad was emotionally abusive. So, like so like a lot of kids like me, I secretly fantasized that I was secretly a Prince or alien and some day my real people would come for me. (This "Chosen One" trope must fundamentally appeal to most children, since it has always been very popular in children's stories, and even is today...just look at Harry Potter. Despite how much I like the series, it's kinda a letdown because he wasn't special because he was "a great wizard"...because he had talent and chose to overcome his tragedy and become someone special. In fact, he's really kinda a crap wizard, Hermionie (or someone else) always has to save him with THEIR knowledge and talent. No, he's just destined to be the special one from birth. Nothing he did, no choice he made, made him the person he was. He would have been The Chosen One no matter what. He didn't chose his destiny, it was chosen for him.)
But as an adult, a flawed adult who has made so, so many mistakes...I prefer the idea that even a non-special wretch like me could choose to be something greater.
And I agree with the criticism in this particular youtube video. (Unfortunately the one that came up right after immediately started with some fanboy bitching about how the new Who was ruined forever because of "feminist...woke...social justice"....*sigh*.