Oh come on, that's bull. This is the exact same line of reasoning as "if you're not with us you're against us" - not being against something does not indicate that one is for something, or even condoning of something.
Reddit's position against doxxing means Reddit is against doxxing - any further extrapolations are your own. Reddit's stance on doxxing may result in women being harassed and photographed in compromising situations, but that in no way means that, quote, "Reddit is expressing the moral preference that it’s okay to harass women and photograph them in compromising positions".
That is a patent falsehood, and I find your entire post deeply offensive. This is the same exact argument right-wing politicians have used in the past to take us to war.
By your logic, the burger you had for lunch last week expresses your moral preference for factory farming practices and the grave environment impact of meat consumption. Guilt by association much?