I'm personally less bothered about commercially (ie B2C) available FRS as it's still fairly basic and not as good as the products used by big organisations, border forces, government offices etc. Because with someone like Dylan Mulvaney, if you're using a picture that he's posted online or from a magazine, the chances are he or the photo editors have trimmed his face to make it look more feminine - in fact they may even have used AI software to re-jig his face to female skull proportions (yes, that product does exist!).
So, assuming the lesbian dating app is using B2C basic software, it won't be 100% accurate but users of the app can use it to support their other perceptions that will tell them whether they're looking at the profile of a lesbian or a dude trying to get sex by deception.
The best software on the market is many factors better than what's available B2C and doesn't miss, ime.