I suppose you could have a chorus open to only straight men, but if you then had that same chorus exclude straight men, that would be problematic from a membership perspective.
Seriously though, there is much discussion in the gay community about excluding straight players from gay sports leagues (mostly for tournaments). Most of these leagues were created decades ago to create a safe place for gays and lesbians to enjoy sports, teams etc. The idea of straight participants wasn’t a problem back then because “Eewww, gays.” Sport to a large extent is a very slow mover in the area of gay acceptance, but the past ten years have had a HUGE shift in cultural acceptance (yay). As far as I know, most gay sport leagues are orientation-inclusive. But as with many things in America, tournaments and competition in these gay leagues grew into a bigger and bigger spotlight. It is in the competitive tournaments that the role of straight players has become a controversy in recent years.
The reason is simple, the desire to win has caused many teams to invite straight players to play solely to make a stronger team. On the other hand, some teams have straight players for the simple reason that everyone gets along and they play together all season. What to do?
I’m not saying that straight players are better; but straight players are more numerous. If I’m putting together a team, if I limit myself to a random 10% of the population, I will have a harder time forming a strong team than if I open my team to 100% of the population. I would liken it to restrictions on geography for little league or something like that. If I understand things correctly, a Little League Team is barred from having a player from the next town over. This restriction is to prevent stacking the team by allowing the team to draw from a larger population.
So either its a gay tournament (10% restricted) or it isn’t (100% open). Most I think have a limit on straight players, but even that is controversial.
Recently there was a tournament (softball, I think?) where enforcement of the rules on straight participants was strained. As posters point out, “How the heck are you going to check?”
Well they did. Badly. Interviews, I think. The players in question claimed Bisexual… which is a whole OTHER can of worms. I think there was a lawsuit involved, which explains the lawyer’s bait and trap.
Anyway, the desire is well-motivated, in my opinion. The practicality of such a rule is obviously fraught with silliness.