If you want to be an asshole be an asshole on your relay, but you can still be on my relay if you follow my rules.

Specialized communities wont come to nostr if anyone can comment on their content because of the chance of vandalism. Nostr itself is an echo chamber and anyone veering from the average perspective is ganged up on disencentivizing others away.

switch relays for specifc topics, or groups multiple relays together for different communities. Just like amethyst uses lists to follow hashtags you can do that for relays. 

Famous user posts, incoming reboost cascade. I get it, I already saw it five times.

you can of course have any mix of relays you want and relays that have loose moderation tools thats perfectly fine and now boosting is less annoying if you're cross posting across communities. Reporting is actually actionable because it holds moderators/relay operators accountable for user behaviors because no one likes a community garden where anyone can shit there as they please.

its not about "forcing" an echo chambers, its allowing a gradient level of openness.