Certainly would seem that a substantial number of the guys at my gym are sly. Usually in the morning--I get there when it opens at 5a, and of the say 15-25 guys there, at least 5 or 6 are sly or very tightly buzzed. I have my own "theory" which is that guys who go to gyms are conscious not only of the health benefits but also about their appearance generally. And, hence, once mpb starts, it detracts from the overall appearance so ultimately off it comes. Case in point one of the guys where I go had some mpb going on and went shorter and shorter and a while back he took it to the bone. I asked him about it and he said one of the things that pushed him over the line was seeing photographs where they caught the back of his head--that convinced him although he said his older brother continues with the mpb look. The other thing I've notice here on the Forum is that a lot of guys who finally accept the genetics, use the opportunity to get to the gym and get rid of some extra weight and tone up.
This is set against an ever increasing number of sly guys generally. My office building has the local headquarters of a national bank and several law firms, etc., and in the food court there are usually at least 3 to 4 sly guys anytime I eat there. On the streets, between tourists and other workers, lots of us. If you go to airports, for whatever reason, there seem to be lots of sly guys as road warriors. I can't tell you the last time I was the only sly guy on a flight--always at least one or two others. Sly is just part of the accepted culture now in most areas of the States at least.