It is fashionable to assume that these people are closet homosexuals, who are afraid to be caught out. In some cases this is probably true.
Unfortunately the term is thrown at anyone who dislikes watching homosexual activity in front of them.
The left expects everyone to accept that homosexuality is normal, and natural, but at the same time will not accept that that a strong reaction against it is also natural. For some reason many homosexuals insist that their habits must be not only accepted by the population, but approved of by them.
In fact the vast majority of people wouldn't care about homosexuality if the homosexual lobby groups wouldn't use children's icons at the Gay Mardigras.