Oh it's definitely not on the same level, agreed. Just authoritarian and to be avoided by those not wanting to be constrained by having to exist inside such an echo chamber.

Edit: I want to add another point about the first post (https://lemmy.world/post/18414833). Even if it was merely someone throwing a fit, the response by the admin to ban people who merely downvoted one of their posts still seems inconsistent with democratic principles and rather 100% aligned with fascist authoritarian ones where Seahorse does whatever Seahorse wants to in that moment, rules and standards of conduct be damned. He can do as he pleases of course... and we can avoid that instance too if that is how he wants to run it.