I dont know that SB2's affiliations are publically available; and I've seen no reference to his being an Anon on the chans, though his decodes do often times fall in line with research submitted to the chans and its likely that as deeply involved in the q movement as he is, and as long as he's been posting q related articles,  he likely has been active on the chans if nothing more than lurking. Your son sounds like he has unappreciated talent likely at a level sufficiently on par with anons given the time devotion to the subject matter (they've been immersed in this for 2 years now). Dont sell him short, he just needs to find his niche and passion and he'll exceed anyone's expectations.