@Fuego therian says it definitely is. He had a JPete stan at his school talking about marxists in the locker room. He told the kid he's a socialist and captain lobster is full of shit and walked away.
@Fuego one of the hosts of a podcast I listen to does grappling w/ a queer grappling group, and seems generally positive about the scene, but lives in NYC. It sucks that folks in areas further afield probably don't have a lot of options to escape that shittyness, but I guess that's true for everything and not just BJJ.