I think the reason there are seemingly more gays is because a vast amount (not a vast majority) of people watch pornography, of which majority are men. Men watch women suck cock etc and train the incentive reward system to reward sucking cock with sexual reward. It is the blowing instead of the masturbation that is being the incentivised because it is what is being seen that generates incentive by masturbation mapping, and much of our brain is visual cortex -> much of our neural mapping is visual.

Therefore if you watch straight porn enough then you will arrive at gayness