Now it’s normalizing incest? Anita Bryant wasn’t just right, she was a Prophet!
Not necessarily. It isn’t usually happily portrayed in the classics, and more often it’s between non-humans. My guess is they’ll focus on rape and general oppression of women. Maybe throw in a line or two about how gays are less likely to rape their sisters.
They’ll almost certainly present it as political protest against whatever’s in power, and so on. But as just another form of pleasuring yourself? Probably not. Rape will trump rebellion, bank on it.