Eh, don't think so. He was loser in school, but mostly harmless. You know the type, the absolute NPC. Not smart enough to be a nerd, not passionate enough to be a geek, not fit enough to be a jock, not normal enough to be, well, a normie. Just a loser, but not the type that would become a schoolshooter, because that requires passion. Bob back then thought his life would vindicate him, because the movies taught him that the underdog would win in the end. So he went on with his life to become an Internet star to make millions, live in a mansion and bang the hot models.
Of course, Bob is Bob, and life isn't the movies, so his life did not, in fact, get any better, he's still a loser and nothing will change that. It's killing him because he can't understand what's going wrong in his life. He HAS to blame it on outside forces, because that's how he thinks life works.