The point of the article linked is exactly that: separate out the misogyny from the trolling. Expose how the trolls (or that particular troll) use any kind of story that they can construct, be it misogyny, misandry, censorship, whatever people at large hate or fear, to construct polarizing narratives aimed at damaging individual people.
I response to your implied question why this is perceived as much more interesting than an older submission of a talk by Anita Sarkeesian (which I didn't watch, I'm just extrapolating here), it's because it separates out the ideology part from the description of the trolling phenomenon. You don't need to drink SeriousPony's koolaid to hear her argument about trolling in general and this troll in particular.
You can't expose trolls by preaching to the choir, you have to talk everybody's language to subvert trolls' efforts to create a polarized discussion.
Note how OP's post was met with weird complaints that she "thought prostitution and being a victim of domestic violence were somehow 'shameful.'" - this is again trying to use ideology to polarize a discussion that should be troll-targeted and not ideology-targeted.
Note: I'm not claiming that we shouldn't try to discuss ideologies, just that it's something that trolls will try to exploit. And that the difficulty of moderating such discussions is why Hackernews doesn't even try to be welcoming to discussions that are or look ideological. Let's put it this way: the moderators here have a good track record for creating a pleasant, constructive discussion around technical stuff (including Windows and Linux and upstart and systemd and a host of contentious issues) and around business/startup stuff. As we find out how to have a constructive, non-polarizing, non-troll-prone discussion about other issues (global economy, misogyny/misandry, whatever), these things will be received more positively on Hackernews. (Or maybe: as much as they are somewhat related to YCombinator's business with startups).
I don't think you can separate ideology and morality entirely from this. Even the statement "it's wrong to harass people for entertainment" is ideological.
The statement "it's wrong to harass people for entertainment" is much less ideological to the extent that (i) you do not immediately jump to conclusions such as "you must be a pro-peace rather than a pro-lulz person then" or (ii) people do not make statements such as "any person who cares for [important thing X] must support the case of [entertainment rather than boredom || giving people peace of mind]"
Ideology starts when you automatically view an instance of a decision on a particular topic as a person's disposition towards that topic, and automatically view a person's disposition towards one topic as a reason to put a label on them and ascribe to them dispositions towards totally unrelated topics.
A non-ideological stance can consist in noting that, while many occasions have shown a co-occurrence of sexism-related idiocy and trolling, they are not the same thing (see Lennart Poettering being harassed for non-sexist reasons), and hence we have multiple angles of attack: combating the trolls through effective lawful action (which is a bit tedious, but still what OP thinks should be done when the guy in person has a well-known track record of harassing people in ways that frequently go beyond what's funny or harmless), combating people's willingness to act on behalf of trolls (e.g. reddit and 4chan's ban on personal-army type posts), as well as acting on the polarizing issues that make people more prone to get drawn into these astroturfing-initiated conflicts (which is a hard thing to do).
Do we have a moral common ground to do any of this? Absolutely. Even if we suspend contentious arguments and ideological blame-shifting.
I response to your implied question why this is perceived as much more interesting than an older submission of a talk by Anita Sarkeesian (which I didn't watch, I'm just extrapolating here), it's because it separates out the ideology part from the description of the trolling phenomenon. You don't need to drink SeriousPony's koolaid to hear her argument about trolling in general and this troll in particular.
You can't expose trolls by preaching to the choir, you have to talk everybody's language to subvert trolls' efforts to create a polarized discussion.
Note how OP's post was met with weird complaints that she "thought prostitution and being a victim of domestic violence were somehow 'shameful.'" - this is again trying to use ideology to polarize a discussion that should be troll-targeted and not ideology-targeted.
Note: I'm not claiming that we shouldn't try to discuss ideologies, just that it's something that trolls will try to exploit. And that the difficulty of moderating such discussions is why Hackernews doesn't even try to be welcoming to discussions that are or look ideological. Let's put it this way: the moderators here have a good track record for creating a pleasant, constructive discussion around technical stuff (including Windows and Linux and upstart and systemd and a host of contentious issues) and around business/startup stuff. As we find out how to have a constructive, non-polarizing, non-troll-prone discussion about other issues (global economy, misogyny/misandry, whatever), these things will be received more positively on Hackernews. (Or maybe: as much as they are somewhat related to YCombinator's business with startups).