Its not you. I've been seeing anti-protestant or anti-reformation stuff on nostr for the whole time I've been on nostr.
Its mainly the Ortho bros. The Catholics don't really say much, and will quickly say they don't know when some historical thing comes up. But Ortho bros lie. They're in your face with lies, pretending they're the only good guys there's ever been in history and pretending they understand the bible. Seeing that (again) was what got me going. Ortho Bros are as abusive as Mormons, and even less honest.