That article specifically says “Men in same-sex marriages”. I feel like “openly gay men who are married” rules out a lot of poor people.
Doesn’t take away from the point about the gender pay gap though.
Apologies if I’m missing it, but it looks like the claim isn’t specific to men in same-sex marriages.
“Individual gay men earn 10% more than straight men with similar education, experience and job profiles,[2][3] and individual gay men who are married have a significantly higher median income than heterosexual married men.[4]”
I read this as unmarried gay men make 10% more than unmarried straight men, and the number is even higher than 10% for those who are married.