I think that it is (or can be) a woman's job to show a man she's interested. Hence why the 80-20 rule states women should be doing 80% of the chasing. However in terms of intimacy, affection, escalating, or making a move, I think it's up to the guy. If she shows signs of interest and begins the 'chase' then that basically gives the guy a green light to make a move, or at least attempt to. If a woman is interested in you and you fail to make a move, she will lose interest fast. She will see you as a coward who's too scared to take what he wants when really she wanted to be fvcked senseless but is too afraid to say it straight up so is hoping that you, as a man, take the initiative instead. And if you don't make a move when she puts herself in an extremely easy position for you to do so, she will lose respect fast and you'll be lucky to have a second chance.
I've had girls do almost all the chasing, but I'll be the first one to make a move when the time is right. So she can initiate the interest and pursuit, contact me first, invite me over to her place, suggest a movie, etc. But then when the movie time actually comes I'll be the first one to escalate and make a move. So basically she can set everything up and I don't have to do anything other than just go for it. And in your gut you know it's a 98% success rate because a chick would never invite a guy over 1 on 1 for a movie night unless she wants to fvck him. And she expects you to know this, and you should.
It's a win win situation because it takes literally no effort at all and you get what you want out of it anyway. Of course this only works if a girl has very high IL, otherwise you will likely have to work a little harder for it. BUT she should still always be the one who is doing most of the chasing. She can and should be initiating the chase, but it's up to you to seal the deal.
If you have to wait for a girl to make a move on you first because you're too scared to kiss her then you're just a pu**y, and in that sense it's not okay to let her initiate all the affection. On the other hand, if you're constantly being turned down for sex for a myriad of BS reasons and she won't put out, then it's likely her interest level is rock bottom and she's an attention wh0re who's just using you for validation.