That said, this webpage is dangerous and misleading for a lot of reasons, but I'll try to focus on the problems that are actionable:
1. The "warning signs" the article enumerates are almost certainly not significantly correlated with youth who commit cyber crimes. In other words, the warning signs are probably just some made up bullshit someone with arbitrary biases came up with and put online. (Even if it accurately describes every youth convicted of cyber crime, that still doesn't mean that it's remotely likely to be correlated with cyber crime.)
In my mind, there's no material difference between teenagers who bully geeks and the author of this article -- both are identifying people who are different from them and then bullying them for being different. The only difference is that the author of this article has fooled themselves into thinking they have a justifiable excuse for painting with a broad brush.
2. The focus on computer security in the alternatives is misplaced. Especially considering the "warning signs". Far better to find the kid some bright mentors who match them intellectually in any field than to focus arbitrarily on computers -- much less computer security! A socially isolated student who's teaching themselves to program is not likely to do much more than roll their eyes if you explain to them that they could spend their life configuring firewalls and installing AV.