If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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If I'm putting it in words, especially for LW, system 2 is going to get involving. However, a proposition of a system of forcing women into sex is something that I take personally because I imagine myself (not in great detail) being mistreated that way. I'm against a military draft, but I don't react the same way to a proposal of a draft for men. Actually, I don't react the same way to a proposal of a military draft for women. This is a personal issue, and trust me, my system one was involved.
(Sidetrack: I liked The Rainbow Cadenza, a science fiction novel in which women are drafted for sex, as a rather clear parallel-to-create-outrage to the military draft for men.)
It wasn't just not examining one's own motives in general, it was pushing opposed people to think the worst of their own motives while not looking at one's own.
I don't actually see him as either saying or suggesting that women should be forced into sex. He seems to be saying that women (and all people) should be forced to not have sex outside of marriage, which would then lead to women settling for lower status partners.
Also, in this case the problem with your system 1 is that it affects your conclusions about what he means. He didn't, after all, make the bigoted proposal you decry. Rather, you interpret him as almost making it. It's a lot easier for bias to get in the way when banning someone for what they're almost-saying than when banning someone for what they're actually saying.