Pretty sure it happened to Gab nodes. In this case justified (and probably with a bit of push from Apple and Google) but the precedent exists. Slightly related

Pretty sure it happened to Gab nodes. In this case justified (and probably with a bit of push from Apple and Google) but the precedent exists. Slightly related Google blocked Element a few years ago because something posted on a federated instance. I think they strong handed matrix.org to implement moderation on the default servers.