Blocking hexbear has nothing to do with a difference in ideas. Hexbear gets blocked because it hosts communities of some of the most obnoxious, unrepentant trolls known to the internet. Lemmygrad and .ml get blocked because said trolls made alts when instances got fed up and defederated from hexbear.

It's like the Khmer Rouge's version of 2004s era /b/. There is nothing to be gained from interacting with those people.

And if/when you're sick of it, you can block it all by server, as opposed to centralized social media where you have to block every nazi sock puppet in the universe individually.