I get the sense that it's really not about people having leftist or non American points of views removed, but that people are sick of the extreme shit they post and their attitudes. And it's seemingly entire instances dedicated to being that extreme, not just some individual users.
Personally though, since users have the tools now to block instances, I don't think there's really as much of a need to defederate unless the instance is specifically doing something more than just posting their views. So I agree with you there. Except that having to go out of your way to block stuff like that makes for an experience that isn't always great. And for me it's been something that doesn't really make me want to participate or use the platform much.
Ouch, stalked my profile for your response here. And its not even true.
But yea, calling me out for complaining when your whole post is a complaint. Good job. You are definitely part of the reason I dont participate much on lemmy.