Some bisexual with a complex called Kinsey pulled that figure from his arse. I reckon 90% are population are strictly straight and don't suffer from this so-called sexual 'fluidity' Kinsey was projecting to feel good about his own type of sexuality, 7% are strictly gay and roughly the tiny 3% remaining fall in the category of the individuals who Kinsey thought are in the vast majority, the so-called fluids.
I just dont believe that only 1 in 10 people in total say they are either straight or gay in a private study.
More than a majority would lean one way or another.
If someone asks are you gay or straight?
I just dont see 90% of people ignoring the question and giving a response of dont know or in the middle if they are bound to privacy.