Namechangeguy boundaries aren't set in stone are they.
I had a builder in my house the other day. A friend of a friend. He was talking to me about some potential work and 3 times he touched me on the arm.
At work, if my boss or colleagues touch me on the arm, I don't mind - don't even notice probably, it's not sexual, it's not threatening, it's ... nothing really, just someone touching me. Not even worth noticing. In a supermarket, someone might touch my back while guiding me towards an aisle and I prob wouldn't mind.
Sth about this guy creeped me out though. Something to do with him being in my house alone with me and not knowing me (first time we'd ever chatted) and overstepping those physical boundaries. He may just be tactile, but so what? The fact that I didn't respond positively the first time, should have stopped him the second time but the fact that he went on to do it the third time, made me decide that there's no way I'm hiring him or having him in my house ever again. I doubt if he'd have touched a man in that way, however tactile he may be.
And yet at work, if someone touched me four times, I wouldn't notice, much less be offended.
So my boundaries differ according to the person, context and situation I'm in. And how tactile someone is, how friendly, how pushy etc., in a normal person also differ according to their context.
The context with men and women, is that men as a group have power over women as a group. The power to rape and call it consensual sex and usually be believed, the power to operate within social norms which have been written and defined by men, the power to take for granted that their perception of an event, is the correct one because that's what movies, TV, books, shows etc. tell us all.