Because on their home instance, that's the normal perspective. They wander in here, like a lost dog, thinking it's their backyard, and start barking, expecting to get a chorus of howls in response but instead get told to shut up.

They're not from here, their instance is full of other libs, and lib communities. They're probably browsing their instance's "All" feed and see these posts because someone from their instance has subscribed to !politics@hexbear.net. They have "lemmy" in their username because many of these instances have it in their domain name. lemmy.world, lemmy.ml, lemmy.dbzer0.com, lemmy.ee, etc. When our comments show up in their instance, the names have @hexbear.net on the end RedWizard@hexbear.net . Lemmy is a federated system, that means these sites are all interconnected, but otherwise their own self-contained ecosystem.