I think it's more likely that he fucked it all up on his own volition in the interview stage. Even on his best behaviour, assuming someone IRL got him to dress like an adult, not mention video games, and not give a single breadcrumb towards his internet footprint, he'll still inadvertently fuck it up. He'll mention something stupid like his motivation for applying being his enjoyment of that vacay run by a travel agent specialising in tours for retarded teenagers.
I don't doubt some ween tried emailing JET about him, but what's some backoffice staff monitoring the general inbox do with that information? Probably nothing.