A criticism that really landed for me of Chibnall's era that he keeps having the Doctor face off against real-world problems, and then be powerless to stop them because the Doctor is imaginary. She can't save the world from global warming or self-absorbed widowed fathers or whatever. I'd expect his intent is that the moral should be a "the power is yours" kind of thing, motivating the audience to action, but having even the Doctor be unable to do anything about massive challenges tends towards being demoralizing rather than inspiring. Not that "Doctor Who isn't going to solve all your problems, you have to grow up and go out there and use fewer plastic products by yourself" is even, on the most superficial level, an effective way to frame the thought.
The conventional science fiction action-adventure take would be to have some sort of metaphor for the real problems happening with space aliens or magic technology or something that the Doctor can solve. The Doctor can't get rid of fossil fuel subsidies, but they can defeat a conspiracy to make cars that make the atmosphere unlivable as a prelude to Sontaran invasion. They can't stop ongoing wars and ethnic strife in the real world, but they can set up a fantasy crucible that requires the leaders of the Zygons and humans to negotiate by offering the opportunity to skip directly to the devastation and heartbreak of a war on a coin-flip.
I've mentioned before the take that Moffat's era sometimes seems like a preemptive refutation of Chibnall's, but Moffat's Thirteenth Doctor lockdown story actually did take the theme that the Doctor isn't real and can't actually save the world and executed on it in a much more deft and effective way.
I do hope that someone else can find a more effective overall schtick for the Thirteenth Doctor in the spin-off media. "The Doctor who's powerless in the real world" seems even worse to me than that period where the Eighth Doctor was just "the Doctor who always gets amnesia."
That's actually an excellent analysis of the Chibnall / Whittaker era, especially season 11. I've noted to myself obviously that the theme of the season was real world social justice issues, the antagonists were all distant and impersonal forces - racism, capitalism, grief - and the Doctor came off as ineffectual because there were no real baddies for her to fight.
But the idea that the Doctor was never going to be able to defeat these forces precisely because they're real world issues is looping that idea back around to itself, and it makes a lot of sense.
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