I'm gonna second Boredfrom here, there's an eagerness to label people "pedos" under flimsy pretenses that is pretty unnerving. ERA has a shitty record both in puritanical moral panics and using propagated misinformation as ground for purity tests.
As far as I remember there wasn't much in the way of incredibly obvious red flags for someone like Amir0x, despite how transparently unhinged he was in many respects otherwise.