I can get behind the idea that pretending to be someone else is bad (either a human or AI pretending to be someone they are not) but chasing anonymity by itself

I can get behind the idea that pretending to be someone else is bad (either a human or AI pretending to be someone they are not) but chasing anonymity by itself is a transparent attempt to gatekeep opinions expressed in the public realm. Given these days all such outbursts are recorded for all eternity you would have to be an absolute idiot to say anything at all since the most mundane comment today could readily get you utterly ostracized in 20 years time. Which of course is the entire idea, but has the side effect that the wisest people will be avoiding all participation.