For a mainstream, mostly hetero dating app, OKCupid made one important protection when it was first acquired by Match back in 2011: the "I don't want to see or be seen by straight people" option.
This does a ton of the leg work in eliminating creepy messages from bros trying to convince lesbians that they "just haven't had it good yet." This past November, OKCupid also expanded its gender and sexuality options to offer 22 possible gender identities and 12 sexual orientations.
Unsurprisingly, the extent of its self-identifying options are "man" or "woman" seeking "men," "women," or "both." There's literally more nuance available in the options for how to describe your smoking habit ("cigar aficionado" anyone?
) than in the options to describe your gender or sexuality.
The CDC estimates that around 4 percent of the population is LGB- or "something else"-identified.
If OKCupid is going to go through the trouble of helping users self-identify in more authentic ways, then why not finish the job and help them actually attract and match with the sorts of partners in whom they're interested?
Look, not everyone is searching for "personality" in a match.
And to have a wide userbase, they need straight people.
And once straight people become their majority market, the app becomes myopically geared towards straight people, thereby diluting its usefulness to the people who arguably have a greater need for it in the first place.