Claire sorry, but I am also of the opinion that you have not read the whole article. You are focussing on one very specific part of his argument. So lets start with your argument about his proposition that
"This is porn that exists, right now – and statistically, it’s what most men are watching"
He says "Go the front page of a porn site and just read the titles" He doesn't say "Go search for the kind of porn you like"
So, it still stands that if you go to the front page of a porn site the titles will be as he suggests "hate speech" (I can't be bothered to go into what is and what isn't hate speech)
How does it then follow that this is the porn that most men are watching? Well, the top sites come up in the top of the search do they not? The complexity of the algorithms that search engines use, ensures that those sites that are most popular, bring in the most income are also the sites that can afford to pay for hours to have web designers ensure they come top in the rankings and get displayed first. If you look at the front page of these sites you can only agree with him, the titles represent the acts, the titles are hate speech, so what follows is a manifestation of men hating women. It really isn't difficult.