I guess if the only thing that makes a man "a man", is the size of his penis, then you have a point.
So what is the alternative? To have a crappy body AND a small dick? Geez, sex is more then just the size of the penis. And having a big dick doesnt make you more "macho" or tougher. You may feel you are are one up on the guy, but that is it, in only one area. At least he worked hard for achieving the way he wants to look as opposed to just being born with it. There is discipline and sacrifice. These are people who set goals and follow through.
And who knows if they are overcompensating? Only they know their own motives.
From being on this site for a while, I see that women want more then just a dick. Having a big dick is just a novelty until you have more substance to be taken seriously by anyone who cares. If you dont mind that, being seen as just a dick, then more power to you. (pun intended)