I have never claimed that homosexuality is a ever a majority of any culture. However, there is a difference between treating people who are attracted to those of the same sex equally and those who are attracted to the same sex being the majority. Pretty sure no culture has ever been predominantly gay. However, no culture has ever been predominantly geniuses or predominantly over 6 feet tall or predominantly left-handed either.
Actually all those people you mentioned would kill homosexuals (in all likelihood). So that would place them pretty fairly on your side. As for the founders, if they lived in our current society, the majority would be on my side. Freedom of the people was the mantra of the founders, including freedom from the whims of any majority.
Again, you keep contradicting yourself. I show you that the majority is on my side at this moment, and you say the majority doesn't matter. Then you go back to your same old mantra of you having the majority on your side. So which is it? Does the majority only matter when it is on your side or does it not matter at all, making your attempted view on being "oppressive" completely pointless?