I think this is as much philosophy as anything else. Patricia has made it clear that pre-season is basically a series of scrimmages for him. He deliberately does things differently to see how players react, how certain plays work, etc. To him, it’s a time to experiment at a game-pace (or near game pace).
Other coaches use them more like dress rehearsals- practice like you play and all that. Sure, no one puts all their cards on the table, but some teams play more like it’s the regular season than others. I think you’ve just identified two teams on opposite ends of the spectrum.
Now, is there a right way or wrong way to use preseason games? I don’t know, and I don’t think anyone else can know either.