In korea autistic people are seen as monsters,so if there are idols with asperger or autism they would never reveal for avoid judgement,and because of idol image.
There are idols suspected to be autistic from people who know autism,these are the names,there is also Taehyung.
*XO’s DO and Sehun, Shinee Jonghyun,Wang Yibo, VIXX’s Leo, TOO’s Chihoon, Treasure’s Asahi, VICTON’s Byungchan, Seventeen’s Jun, NCT’s Taeyong, BTS’s Taehyung, Yoongi,GIDLEShuhua,Monsta x kihyun,Ateez yeosang.
There are people who think Ta3min,but I don't think so because he is enlisted,autistic people can't be in the army,maybe they could do public officer,but Ta3min is a soldier like was Key.Also DO was in the army,so he can't be autistic,also Baekhyun who is another suspected to be in the spectrum
Vixx Leo was in the public service,it could be possible that the autistic idols enlisted to avoid problems,but in the army they know the real situation,and they accept to cover the truth for the sake of the idol.