> On Mastodon, if you take the wrong side, those on the correct side will defederate from you. Not merely because you host (or don't host) the content they like (or dislike), but because you merely enable (or discriminate against) those who host that content.

Ok, so? People block you all the time because they don't agree with you, why is that a problem? If people don't want to hear what you say, shouldn't they be allowed to not listen?

Personally, I don't understand that point of view of blocking people who you disagree with, for me the point of the internet is to find different views and perspectives, but I'm also fine with others filtering out whatever I say, doesn't really impact me either way.

If you want no rules what you say, run your own instance. Depending on what you say, some people will want to listen, others will want to filter your opinion away, I don't think either sides are "wrong" for that, it's just like in real life. If you want to use someone else's instance, you follow their rules. It mostly isn't harder than this.

No, because this happens on a per-admin level, not on a per-user level.

You go on a cruise for two weeks and there's a disagreement about whether to federate with Meta or not. Your admin takes a side, whatever that side might be. Two weeks later, you come back and lose 10% of followers, and there's nothing you can do about it.