that requres, no, DEMANDS excellence from it's posters, it intimidates a lot of guys. They stay away at first, doing a lot of soul searching, wondering if the man who looks back at them in the mirror is the best version of them they can be. It's put up or shut up time when that happens, and for most men, it's easier just to stay on the fence on their nice little average lukewarm board.
But then, something happens. It just takes one guy to wake up and say, "######, I'm tired of being average, and I'm not going to live like this anymore", and they dip a toe in the PRO water.
Then they get hooked on being a PRO, and they tell a friend, and that friend tells a friend.....then, comrade, you have a PRO MOVEMENT. Give it time, we'll get there.