Yes it is really common.
I'm always surprised when I read posts from women on here who have had nothing. And happy for them obviously! It's not the experience of me or the women I know well enough to talk about it with/ or the girls I grew up with.
I do wonder if some of it is down to where you grow up, there seen to be differences in different parts of the country and maybe smaller towns Vs cities etc. I'm in London and there's so many people and so many places to go it's all very anon and not local at all iyswim. There's also the luck element and then even stuff like how you got to/ from school, where you went out at night etc.
The other thing I think is that it's nice to think things aren't that bad/ or not see certain things as 'counting'.
So for sexual assault, people (women) often think of pretty extreme stuff. And not the flasher on the way home from school, the scary experience with the man trying to get you into his car, the man who followed you on the train etc.
And yes some of the these are illegal and some not, and what constitutes assault is a different thing. IE its hands on, and anything not hands on is not seen as so bad. But I think the laws are all based in the things men are likely to experience or straight up violence. They don't address eg the man driving slowly next to you in his car when you're walking somewhere and saying really scary things. That sort of stuff.
The point about men not believing is very true as well. And the thing is, they don't actually want to. Because then they might have to do something, individually or as a group. It suits them that women and girls tend not to tell about this stuff to blokes. We tell each other, if we tell anyone at all.
When metoo happened in general you he response from a lot of chaps seemed to go quickly from
Omg that's terrible why didn't women say anything (erm we've been banging on about it forever)
To
That's an awful lot. Can't be right. There's must be some exaggeration/ lies/ overreactions in there
To
I can't even look at a woman any more!!!
Fact is and the reason we don't tell is probably that deep down we know they don't want to know. It'll upset them. They don't know what to do. If it's a bloke they know then tricky. And etc etc etc.
So yes a host of problems.
I think the root is that many see it as natural for some men to behave this way and it's up to women and girls to somehow avoid it. And if it happens well, was it really so bad? It's not like you got punched in the face. And what were you doing there anyway?