Not out of realm of possibility. Bowie and Jagger supposedly hooked up after having so many women they got bored. Same thing with the libertine elites of Roman Empire, towards the end the more taboo the better.
The thought of those two lanky, emaciated Brits going at it makes me vomit.
I read that Bowie was claiming to be gay since 1969. He actually admitted that he would say that. [Seemingly he appeared cool] He said he claimed he met his wife, because they were both biblical with the same man.
It is where hedonism leads.
Heinlein went the same way. At the end he championed pederasty and incest.
Without a moral compass (he considered himself as the only one to make moral decisions), pederasty and incest were only artificial taboos.
Bowie was gay or bisexual. A long time ago I knew a guy who met Bowie backstage at a concert and Bowie propositioned him.
As for Hefner, imho he absolutely looked and sounded gay.
Well, it’s funny because Mick once walked in on Hefner and Dennis Weaver together. Mick said, “Hey, hey! Hugh! Hugh! Get offa McCloud!”