Fanbases are all cancer

Every fandom is stupider than the other in one way and I could care about that but I hardly even talk about cancer
Examples of fanbases that make me wish cancer and ebola banded together and made a superdisease are:
Undertale, Steven Universe, Gravity Falls, Terraria, Minecraft, Slime Rancher, H3H3, Leafy, Pyrocynical, Stomedy, Hitler, Stalin, I could go on. the content itself is great, but the fandom is pure old cancer
The title of my post is a TL;DR of this