Unlike weapons of mass destruction, though, there's nothing to be gained by working on adtech. Let me unpack that a bit--a "good guy" can justify working on nuclear weapons because if he doesn't his country will be unable to defend itself when the treaties break down. There's no similar existential threat with adtech. If I choose to not work on that poison, I'm not leaving any advantage on the table. My agency in this situation is worthless. At least that conclusion is why I don't do adtech anymore.
I broadly agree with your bigger point though. To the extent that AI coding tools are useful it's important to explore their use, and evaluate whether they're any good. But if I'm in a company that's forcing their use, or putting up token use leaderboards, or any of the other horror stories we've been hearing about, you can be damn sure I'd get myself fired or quit. At that point the inmates are running the asylum, and there's no reason to stay.