It's easier to choose and curate for oneself. Blocking comms actually works (even if blocking instances or users doesn't). I don't see any tankie comms anymore, even if I still have to argue with .ml users in comments on other threads.

And even though mods can ban from communities or instances, no automated admin bots can give you a site-wide ban over petty reasons. I can say I hate nazis without getting my entire IP banned for "hate speech"...