A lot of people are mad, and I get it. Last night's episode does aggressively alter the story that we've been told for 50 years. But... I still don't hate the reveal.
I'm not sure whether I "hate" it.
But - it also doesn't really make sense.
The story that we have been told is that the TimeLords were one of the first races to emerge.
That Gallifrey was unique in that it held the Untempered Schism
That it was the exposure to the Time Vortex through the Untempered Schism that changed the course of Time Lord evolution, that granted them (and River Song) the power of regeneration and eventually, through Rassilon and Omega, led to their mastery of time and their sensitivity to it.
That storyline kinda makes sense in a way the Timeless Child does not.
Which is at once too much change and yet not enough...for all the Masters build up, this supposed revelation changes very little. It is supposedy a big secret but the secret is that the Shabogans used genetic engineering to grant themsleves regeneration rather than evolving it naturally?
That was a very underwhelming secret.
It also makes the Doctor "special" in a way he never was before.
I have no problem with their being Doctors pre-Hartnell. That has long been suspected and even hinted at.
And I like this better than what i was afraid of - that Gallifreyans were going to be human survivors from the Cyber Wars sent back in time through the boundary
But it also isn't a secret worthy of being a secret.