I figure it's plain old middle class snobbery (and insecurity). It's what happens when you rely on buying things to feel good about yourself.
There's a bit of that, but I think it's more about taste and an appreciation of aesthetics. You don't have to be wealthy to have either.
I would argue that the same guys that run shitter pipe snorkels are the same guys that would put an Aimpoint on a Holland and Holland rifle and think that is a-ok because it works. It may very well, but if one can't see what's wrong with that, then I can't help them.