O.K. I agree for the time being that the act of having any kind of sex is not 'feminine' in itself.
That includes getting anally fucked --- a highly denigrated act for men.
But I know that most men who are interested in anal intercourse will accept only an exclusive interest in being the 'active' partner, but never the 'passive' partner even if they enjoy it.
That is because, there is a strong stigma attached to the act of being fucked, the same that has been attached to the very desire for another man in a heterosexual society.
In the traditional society, a man however much he may like receptive anal intercourse will never accept it, even if you conducted an anonymous poll. Of course he will never allow himself to be fucked (unless in special circumstances where he will feign any interest in the act!).
Just like in the heterosexual society the man will deny having any sexual interest at all, even if he secretly has that interest, and he will not accept it even in an anonymous poll because the thing has extreme psychological stigma associated with it.
In ancient times --- even in the times of the Greeks, the act of being fucked was associated with feminne gendered 'soft' males, whereas most of the masculine gendered men had sex with each other --- they were suppsoed to thigh fuck each other.
The heterosxual society adopted the same strategy to marginalise same sex behaviour. It equated a desire for men as intricately being linked to 'anal intercourse' which already was strongly associated with the feminine gendered 'soft' men that was a great dishonour for men to be associated with.
In the ancient days, the kings who conquered an army used to treat their prisoners like this --- to dishonour them by fucking them anally. In fact in many cultures it was justified for someone to kill someone if he accused him of being someone who gets fucked anally.
However, as discussed earlier, there is nothing anatomical in the feminne gendered males that makes the anal area more plearsurable to them than to the masculine gendered males. The stigma and distaste associated with it are just social.
I have known several cases where men enjoy and have receptive anal but will never accept that he enjoyed it, and in fact always pretend that he is just doing it as a favour to the other guy --- and there are several cases where the feminine gendered male acts as the 'active' partner while the masculine gendered male does the 'passive' role in private.
Similarly, in traditional societies, a man giving oral to a woman will be thought of as a wimp.