Yeah but that could still be their upfetchins. It doesn'r mean their attractions were determined by genetics.
I don't buy it. How can one be taught to love the meat pole. Its in men's genes (our hard wiring--again no pun intened,,, well, maybe)to search out and aquire furburger. When genes go bad, and there is a cross in the wiring, dudes start looking good. This is not an aquired attraction. It goes against the laws of nature. Its an abberation. If you are straight, there is no social engineering or chinese water torture that can make a you look at a hairy sphincter backing up on you and say "yeah, that looks good". Sure crack addicts do. But that is different. In my last post I mentioned a few queers I picked out at an early age. I forgot to mention that one of the guys dad is a hard pipe hitt'n Marine and the other was a grizzly Adams look'n guy who was as manly of a guy you'llever meet. The families were not teaching these guys to be queer. This was back before the MTV, BRAVO days.
Don't confuse genetics with biology. There are other biological factors that are not genetic (non-genetic birth defects and chemicals in the womb affecting brain development, for instance)