In Terry's case, the attention visibly fueled his delusions, providing clamoring approval for many of the self destructive things he did, eventually leading to his death. I don't think Drew means he should've been fully alone, but that he'd have been better off without the kind of attention he got from strangers on the internet who largely fall into two camps: people who are amused by his antics and provoke him, and people who apologize for him because of his impressive feat, both of which validated his behaviour.