Blocked it 👍

Two other communities on the list, one from feddit.rocks and one from lemm.ee, seem to be on the list too given that they're also unblockable, and should probably stay that way given that unlike the thunder one, they seem to target specific Lemmy users.

I guess I'll ask the Arctic developer if there's a way to detect instance-blocked communities to filter those two communities from my list as well.