Which answers do I need to give for you to help me out here? Are you going to? I'm not looking for an argument.
[EDIT] FWIW I've yet to see anything that makes me confident enough to assign any strong and specific guess about the guy's motivations. I'm confident in "he was very online" and "he played Helldivers a lot, or at least spent a lot of time communicating with people who do" and that's about all I'd feel comfortable confidently asserting if someone asked me for the "TL;DR" on where we're at on that.