I think a lot of our youth have been influenced on these matters, so it may be higher than the segment of our society that demographic represents.
Despite my attempt at quick witted humor, I think we’re darn lucky it wasn’t something more like 15-20% these days.
As for that demographic percentage you addressed, I think those numbers are pretty realistic.
I remember when homosexuals first came out of the closet. Many quoted 20-25% of the population was homosexual. Well, I'm no statistician but those numbers were BALONEY.
So, I've kept an eye on the shifting numbers over the decades--not rigorously but enough to know that the numbers of homosexual/bisexual people is MUCH lower than the non-heterosexual community would have us believe. The media also HYPED the worst news--of course--so people who believe whatever the media say will believe the larger wrong numbers.
I think their numbers were wishful thinking. And, sadly, THEY were the worst hit by the AIDs epidemic.
Creation was our Lord's work and there is NO reason to believe that He wanted THAT many abnormal people.
And, biblically speaking, anything BUT heterosexual relations is a sin...a big one.