I think it's probably easiest just to realize that it's just a style of interaction--and likely a survival tactic, at that! It takes a certain amount of arrogance to think that you can engineer stuff better than the teams of people they had working on these motors back in Germany--and it takes a lot of persistence (as well as some luck, and some talent!) to actually be able to pull it off.
A high proportion of the mechanics that I know that I feel are "excellent" have very specific ways of doing things. They usually aren't shy about letting you know if you do something that contradicts those ways. ("Those things are aftermarket junk--get them the h**l out of my shop!" is something I've heard from more than one of them.) If Jake comes off a little arrogant in his posts, consider the fact that it's probably well-earned. I'm betting that it's also a way to avoid some of the more simple/silly questions, and arguments about some of the more basic things. You'd be amazed at some of the questions people send to me....
...Hey, at least he isn't Br@d!!
--DD