The thing is a lot of people, myself included are fine just using mid caps. I have no issues with 5 or 6 mags, the alternative being lots of winding and forgetting to wind in a firefight meaning you get the drop on someone and your gun fires nothing. I've got no problem with people running whatever they like in airsoft, but it should be noted there's no elitism in running mid caps and even people running low caps in their gas guns with no perceived loadout impression have no problem in games.
I actually never saw the point in anything but high caps years ago when I started airsoft, but after actually trying the alternatives it makes a lot more sense.