What in the hell are you talking about? You really think an NFL player is going to fear for his genitals because another professional in the next locker happens to have another sexual proclivity? You think he’s going to be so turned on by your steroid infused bulk that he cant control himself and is going to violate you while your on the bench press?
The rest of humanity seems to get along pretty well with communal weight rooms, and showers. Are you so daft as to think that in SF bay area we don’t run into (some openly) gay people at the gym every day?
Frankly, the gay men I know have far too much taste to embarrass themselves by lowering their standards to meet the common football player. Certainly not in a locker room.