Perifags are the same kind of people who become bronies, and they are attracted to her for the same reasons bronies love their horse show. Their hyper-autism and tone-deaf insistence that all discussion be directed towards venerating their whyfoo has dragged down the standing of SU, and have thrown the more reasonable SU funposters under the bus. SU used to run the gamut from accepted to even well received, but now it's barely, begrudgingly tolerated, and that slippery slope started with those gremlins. They've thrown the gate open to the worst kind of shitposters and waifufags: the kind that makes Marvel vs. DC threads look like scholarly debates between ancient Greek philosophers in comparison, and it completely justifies the mod's decision to permaban all SU threads to /trash/, and I say this as a fan of SU since nearly the beginning.
Pic related: /co/ used to make content FOR Steven Universe. How sad that we have come to this.