Academics who insisting on their colleagues moving to Bluesky aren't deleting noise. That's a pretext. What these academics are really doing is trying to use their social power to enforce singular answers to questions that divide the public. They're tacitly asserting that nobody can be a legitimate intellectual and disagree with them on social issues having nothing to do with their field.
I'm not going to waste my time on people who can't tolerate divergent perspectives. X has plenty of tools to help people prune distractions from their timelines. This isn't a signal to noise ratio thing so much as a contamination taboo. Frazer would be proud. The problem these academics have with X isn't that it's noisy channel, but actually that it lets the wrong people participate.
These academics think they have a monopoly on knowledge production, but they don't. Close-mindedness bleeds from the social to the professional domain with terrifying speed. Censorship is anathema to discovery. When academics try to use ostracism to build echo chambers like Bluesky, they're only accelerating the ongoing divorce of academia and scholarship.
The rest of your comment tells me that you don't really spend a lot of time with scientists, but you do spend a lot of time developing your opinions from social media. I wish you could do the opposite! Academics are great and funny and sometimes wrong about social issues just like other people, but they also work on some of the coolest problems we have.
The difference is there's no algorithmic feed pushing stuff at you and it's easy to filter or block things you personally find offensive.
So you can totally have an audience of people who like what you say, but you have no right to annoy an audience who dislikes it.
If you like being outraged all the time, then fine. Many people don't want that experience.
He was not banned because his "pretty innocuous post" offended anyone's political sensibilities. He has 15k followers. He isn't being oppressed or censored.