I think some people were just so used to only seeing one type of opinion over and over which confirmed and/or formed their biases and now that Twitter/X was liberated they can't comprehend that their worldview is just one of many and in many cases when allowed people have easily poked holes in it. It's difficult for people to accept that they've possibly been wrong about things, or at the least have their beliefs challenged and not have an authority to appeal to that will make dissent go away.

I do think leaving Twitter because you don't want to be on a corporate social media network is a valid reason though. But Bluesky isn't that. It's just safespace 2.0.