If you really think 80% of men would not want a threesome with two women, you are sorely mistaken.
And I find it interesting that the driving force behind your stance is fear of hypocrisy and rejecting the entire concept as wrong, to the point where you have to "look at it differently" to see it as disgusting.
You see, your entire argument is based on rejecting some sort of "lgbtq community" as if it was a real thing, and not a made-up shield for activists that has nothing to do with most homosexual people. That's politics, not human nature. Your perceived duty to be intolerant to a destructive political movement has nothing to do with the way human attraction actually works.
I am talking about the reality of sex, you are trying to counter by talking about ideology and prescriptive morals. That's not going to work.