Why do default skins get harassed?

It's the same kind of toxic mentality that plagues any online game that features cosmetics

"Oh you don't have cosmetics. You're a stupid KID haha! You sukc at this game and I will make fun of you"

Yes there is a stereotype that most f2ps are either new and don't know if they want to play the game seriously, or are children who don't have their parents permission to buy stuff. But hell there are some damn good f2p's. Idc what anybody says, some f2ps are better than the known players.