I didn't click the link; don't need to click it to know that if a woman says stop, her partner, whether a man or a woman, should stop.
What I find interesting about this discussion is, people use all kinds of cues to let their partner know they aren't into what's going on. I mean, if I push against someone's hip or chest, I would hope that would be enough to say, stop, or at least ease the heck up.... In the heat of the moment, maybe the word stop needs to be uttered, but clues, body language, all of that count too. I mean, when someone is in pain (and you all aren't into playing with pain and sex) and their body language changes. I'd think you'd pick up on that....I'd hope, I guess. Whatever.
And the more I think about it, the more I see times when it is up to the guy to watch himself with a partner. More, if a guy is larger, imho, he needs to be more in tune with his partner, what s/he is feeling and if they are good. I mean, it's not like you're jacking off. There is another person there. Ask. Check in if you're even slightly uneasy....or get that vibe that something isn't right. I'd sure hope you have some sort of connection besides hip to hip.
And some women simply won't say anything, they might be too shy, too new to having sex with you, or some other reason -- society, parents, past partners, who knows? -- so the question becomes even harder to figure out.... geesh, Sex is harder than it looks, isn't it? And yeah, in some of these cases, the responsibility is on the guy to communicate, maybe not to be the only one shouldering the responsibility, but I can see where a guy might have more to do than just screw someone ....if his partner isn't able to say something when sex hurts....
I think this is why knowing who you are screwing might be a good thing, before you screw them, if you get my drift.