Last week i was in a nudist private beach with some female friends, and near us what a guy tanning with closed eyes, like sleeping, he was almost naked (as us, duh) but he was covering is crotch with a big towel, and he was like moaning in whispers, and there was a sound of vibrations coming from him, and there was a bulge in his towel so we assumed that he had an difficult erection so he was covering, we didnt payed much attetion until the moans from him stopped and the when He took off his towel, we saw the have like a Autoblow or somekind of mini automatic masturbator in his dick, and then he went away.

I was discussing this with my female friends and they said that it was okay because as some bs (thier words, not mine) rules of some nudist places, men need to cover their boners, as he did, and he use the masturbator as a way to solve that erection, and they even mention how womens body show arousal in some subtle ways but they are not forced to hide that so its misoginistic to mandate men to hide a natural state of their body; a boner, that if the men is not touching himself in a exhibitionist way, its ok, that this is body shamining and misoginistic. I saw many discussion in reddit and other forums that boners should or shouldnt be allowed in nudist/naturist places but idk if last week experience was the same. Is this normal behaviour to use a masturbator in public? is the towel rule to hide erections a way of body shame even if erections are uncommon to occur? My female friends sayd that as we need to normalize womens body (they use the example of "Free the nipple" movement), we need to normalize random or intentional boners
Im pretty confused by this topic, what is your oppinion?