Their viewpoint is very much a grognar one. "we are right because we are".
To me it's the difference between a simulation and a game. A simulation (as fostered by the military input) is meant to be a highly accurate training aid. It can be enjoyable, but the devil is in the details. Having played this kind of ruleset in the past once you are in your 4th hour of gaming it begins to be slog, albeit a very accurate one. I honestly don't think I ever finished a 1/285th session.
A Game ruleset is meant to be an abstraction, more fast paced and loose. Realism plays little part, it's more of a based in reality concept.
Neither is wrong, just a preference based on the individual. I'd like to ask what they'd think of someone who started out with their games, then moved to a "beginner" ruleset, because I had no desire to play literally all day.