Yes, the "brain worm guy" was a shitheel before he got a parasite that in no way made him the shitheel he is. He was spreading medical misinformation prior to that and that type of cist generally doesn't effect neurology in a major way, and it's actually more common then you'd think in certain parts of the world. So yes, medical misinformation and just a generally shitty thing to do.
You're just insulting other people that have had the same thing happen. How is that hard to see?