>The Doctor before Chibnall
A troublemaking, curious fellow that deliberately chose to break with their society to do good, to experience life and make a change for the better out in the wide open universe.
>The Doctor under Chibnall
A super-special very unique messiah that nothing else in the universe will ever be like that was always destined to be who they are not out of any conscious choice but out of some kind of vague cosmic fate, as explained by the Master. Breaking with their society? Doesn't matter, wasn't really their society. Choosing to spend their lives for the sake of others? Doesn't matter, infinite lives. No stakes whatsoever, investing even a thousand regeneration is nothing. Chibnall's Doctor was ALWAYS going to turn out the way they are, and that's just so very fucking boring.