You're either misinformed or bullshitting to confuse people.
None of the previous Aero threads on /cow/ even mention Traptopia or try to connect Aero to it. he wasn't around then.
Aero created "Aero's trap harem" which was based off Reiko's defunct traptopia but with Aero's own neurotic BPD twist.
Aero and his server were directly responsible for organized flooding of halfchan and 8chan with HRT spam threads over several months while trying to recruit members which is what first put him on the map along with the rants about how testosterone is the cause of all evil.
Aero also tried to frame Von with false rape accusations and got his second-in-command Dusky to dox 98digger and send his nudes to his parents and a bunch of other shit.
Everything Aero was involved with is clearly well documented while there is much more misinfo regarding the Reiko situation. Either way this thread is only about Aero.
But Cass and /r9cute/ are a whole different beast entirely which although Aero associates with and has moderate involvement with- he is also disliked by several of their members.
The difference is Aero/Cass take it seriously and are genuinely mental whereas Reiko was mostly trying to get a rise out of people.
Reiko wasn't a troon and doesn't believe any of this shit, Cass and Aero do. He's just seen as an e-celeb to internet trannies