Photography. You'll probably get a variety of answers, but I would venture that a fast, professional level prime (L lenses for us Canon shooters) would be the top vote.

I mean it's not just reddit. While investors probably don't care, the fact that he lied about easily disprovable things that did or did not happen doesn't bode well. I don't think it's going to hurt their bottom line any time soon, but that kind of spinelessness isn't exactly liked.