Yes.
With team sports you can look at various ways a team failed and kinda spread the blame, but with fighters it's all on that person. So when someone loses you see "fans" talk shit about them. Despite it being the toughest and most brutal competition on Earth, "fans" find a way to shit on fighters.
It gets worse when people are shitting on fighters over nationality bullshit. I lose a bit of faith in humanity every time I see American fans or Brazilian fans booing this shit out of a person that flew half way around the world to perform a dangerous job in front of them for their entertainment. Ridiculous pieces of shit that need purged from the gene pool.