In a democratic society, sexual behavior cannot be legally treated as unacceptable...
Guess again. I submit the 230 years of precedent which says otherwise in JUST THE US ALONE... and the 99.99999~% of human history, where sexual deviancy has been 'unacceptable'.
What you're desperately wanting to establish is that deviancy is only considered such because of antiquated societal constructs... and that if a majority of 'das peoples' 'BELIEVE' that deviancy is normal... then deviancy MAGICALLY becomes normal.
Sadly... Majority opinion does not determine normality. And there's no such thing as MAGIC... What you're wishful of, is what is known as ILLUSION... which where such becomes BELIEVED DESPITE THE EVIDENCE BORN IN REALITY: Such turns to DELUSION.
And again, quite sadly, is what you and your cult are saddled with.