I saw the video, and I think that it's sad that it even got to this point. However, something just doesn't click, and for obvious reasons he's withholding information. Some Japanese women are funny like that. If you own more than two games and systems, you get labeled an "otaku". While people glorify the term here, in Japan it is another way of saying shut-in loser to some people. My wife is Japanese as well, and she gives me crap over my hobby, and is worried that my game collecting will an adverse effect on our daughter. However, since I don't smoke, drink, or party she's come to terms with my hobby, and realizes that it is just that. A hobby, nothing less, nothing more.
With that said, I find it unfathomable that Luke's wife would leave him over some games, because he's had a significant game collection for years, so it's hard to believe that there would be a single game purchase that would finally drive her over the edge. Maybe he used all of their savings for the stuff he showcased or maybe he maxed out the credit cards. No one knows for sure.
