Doubtful, considering that the new residential population seems to have some contact w/ the People but are still overall separated, and when they integrate likely tend to integrate into our values. Furthermore doesn't remove his points that shamans et al are in esteemed positions, increasing their appeal as partners and likely providing more food and opportunities for their children.
IRL homo- and bi-sexuality is still stigmatized against, which means it's a) underreported, and b) individually repressed. As traits they also don't result in esteemed positions, higher income, etc.
tldr: plz argue in consideration of points brought up rather than just the points you believe in <3 <3