This comes from an incident some years ago (80s) where one of his mates was given a kicking by the police and was going to be arrested after he tried to stop a fight between a young man and a girl. Police turned up and gave both his mate and the lad a belt but it turns out the lad was her boyfriend and they then said it was his mates fault. It was only when the bouncers from a pub opposite who saw what had happened explained he'd been trying to stop it the police let him off. Their 'unofficial' advice was don't get involved, walk away, call the police if you want.
Firstly, well done for continually shoe horning how bad women are too into a conversation sparked by the death of a woman, at the hands of a man who was supposed to be not just a good guy, but one of the very best and one that women should feel safer around. And one who is not isolated in doing that as statistics and data show.
Secondly, the attitude of the police, that is a reflection of the justice system and society, is something that people are trying to identify, talk about and change.
I believe your DH and his mate were told that, because I've been told something very similar.
Me and 13yo DD waiting for a bus, sitting down. Man approaches, lays on some patter, asks us to join him in the pub. I decline. He doesn't want to take no for an answer, targets DD, she says no. He then proceeds to tell us that we'll regret it, because he's a good fuck, and DD looks like she could do with one to put a smile on her face. I get up and in his face at this point, because I'm angry and because I feel at a disadvantage sitting down. I tell him to go away, that my DD is a child and we don't want to talk to him. I don't swear, I don't shout, but yes it's clear I'm angry. He then steps towards me, his tone changes to aggression and tells me I'm a stuck up cunt and he's just being nice, and no wonder we're miserable because the way we behave puts men off and all we need is a good shag (not word for word, it was a few years ago now, but general gist) At which point the police drive past, and stop because they see basically, me and him squaring up to each other. He's sent on his way, and I'm told off for even responding to him, for 'antagonising' him, told we should have just walked to the next bus stop if we didn't want to be treated like that. Told we should have ignored him.
I have no issues with him approaching initially. I really do have issues with his continued 'perseverance' and the things he said, his reaction to 'no'. I also have a problem with the way the police made it all about us being there, rather than how he behaved, about how we were told we should have done something different than sit waiting for a bus, and him? "Go home mate, these ladies don't want to talk to you" that was it.
The attitude is so entrenched in society that even the people meant to be dealing with this shit would rather take the easy option than give him a bollocking for behaving that way. No one (except me) told him his behaviour was out of line, but they told me mine was.