Lemmygrad is actually a different server/instance of Lemmy, and it is run by actual tankies who ban anyone who's not a tankie. They do not allow any sort of disagreement or discussion. They exist purely to "dunk on libs".
I've been banned already from there. Their reasoning? "Being a lib" (forget that I'm literally a communist for a second, and you get the picture).
You can see my post there if you want. It's literally at the top of the list. I say fuck 'em.