If I remember the argument: homosexual behavior can be identified in both species descended from dinosaurs as well as in species that appear to have evolved significantly separately from them, indicating if homosexuality is an inheritable trait then dinosaurs were a gay common ancestor.
I can’t quite remember the link they made but I remember I found the argument more valid for obligate nonreproductive members of a species evolving but not necessary homosexuality in and of itself.
Alex Jones would’ve liked that class to be honest.