As is usually the case, the devil is in the detail. Yes, "hurt feelings" are probably not likely to fall within this law. But issuing direct threats is illegal if you do it face to face, and in writing. However it gets more complicated on the interweb because of the whole "It was just a joke" thing. Sheer volume of this **** also means that police almost never bother to investigate - which is unlikely to change with a new law. I'm inclined to agree that what is needed is better enforcement of current laws, but we aren't getting that. Yes, any new law might get overwhelmed by trivial cases - although weeding them out is what the CPS is paid to do. But if this means that fewer misogynists gang up on any women who puts her head above the parapet, I'm for it.
However...
"It was just a joke" has been the defence of bullies for centuries, and has always been a stupid defence. Firstly, because it never was a joke. Secondly, because it's not the joker who gets to decide if it's a joke or not, but the victim.
As for the whole "I'm a hard man and I can take threats of rape" thing, then well done you. I hope you and your killer keyboard get on just fine. But to point out the -ing obvious, threats of rape to man and threats of rape to women are largely different things. Because by and large men can be pretty sure that a person won't track them down and rape them, but women do always have that fear. Because men do. The figures for rape are complicated, but it's likely that at least a quarter of women have been raped at some time. Women have the fear of rape all their life, so it's not a joke - or an idle threat - when some proposes to do it to them. If you have to worry about being raped, and realistically at that, every time you are with a man, then such threats are extremely stressful.