I hope you don't mind if I jump in.
I'm going to say, "No." Keeping in mind that my reason for believing this is based on personal experience:
My brother was raised with 3 other siblings in a home by two WWII generation parents. The word "gay" wasn't even whispered. It wasn't bashed ~ it just simply wasn't an idea that was entertained. Heterosexuality was naturally assumed and expected.
When he realized he didn't like women, he figured it was God's way of telling him he was destined to be a Catholic priest. It took him a while, but after must study and reflection, he eventually figured out he was gay.
The rest of us are straight. We were raised in the same environment and by the same set of parents. Why is he different?