No, it"s not just about Valenti. And no, lots of women, prominent and otherwise, are finding that when they post anything mildly controversial, they get rape threats.
I'm going to go out on a limb here and guess they're mostly feminists, right? Believe it or not almost nobody wants to rape anyone else, men don't go around raping at random, and rape culture is the most stone cold idiotic attempt to induce a moral panic I've ever heard of. That's not to say some social maladjusts don't send rape threats of course, but the internet is littered with all sorts of mental wreckage without indicating widespread mis-whatevery.
Finally, even if your attempt to misrepresent one columnist using a zero-context photo had legitimacy and didn't misrepresent her, it wouldn't support rape threats against her.
There really isn't anything to misrepresent. She put it up on her twitter feed as a holiday snap. She's a well known feminist figure and like most feminists, she's widely despised. That photo illustrates why. Why is it okay one way but not the other when male suicides are 4 or 5 times female suicides? Not very funny now is it? Or envision if you will the response if a man were photographed wearing a t-shirt that says "I bathe in female tears", the social justice brigade would have a seizure.
Valenti's made a career out of demonising half the population, so she's not representative of "most women" and their experiences. That you made a mental leap from there to insinuating that she deserved however it says a lot more about you than me.
Michele Malkin regularly gets rape threats against her.
You've access to her personal email accounts and so on, I suppose? I checked it out though, and I can only find one publicised instance of her receiving rape threats - when she criticised a particularly thin skinned rapper. Again this isn't representative of the experiences of most women, for reasons which should be obvious.
And nobody's committed suicide, NOBODY, because they felt they were unable to issue a rape threat against an uppity woman who they disagreed with, so why bring it up?
I'm not sure how convoluted deflections can actually get, but this is probaby in the top tenth percentile if anyone's keeping track.