Here's the deal: the people in the movie are armatures. These aren't Oscar award winning actors we're talking about. So, planned or not, that Billy is able to come off as a evil villain of video games indicates that that's at least in part who he is. Same for Steve.
Anybody who's ever been in the entertainment industry knows that, to a degree, everything is scripted and everybody is playing a role. That doesn't make it any less real or true.
I've seen the complainers, the don't want the "truth" to get out, the are just sad that they aren't as awesome as Billy and Steve.
