That line was somewhat tongue-in-cheek. I wouldn't go that far over the top in a real discussion, although I might throw in a bit of anti-*ist rhetoric as an expected shibboleth.
That being said, these people aren't stupid. They don't generally have the same priorities or epistemology that we do, and they're very political, but that's true of a lot of people outside the gates of our incestuous little nerd-ghetto. Winning, in the real world, implies dealing with these people, and that's likely to go a lot better if we understand them.
Does that mean we should go out and pick fights with mainstream social justice advocates? No, of course not. But putting ourselves in their shoes every now and then can't hurt.
This makes some sense. I think part of the reason my contribution was taken so badly was, as I said, that I was arguing in a style that was clearly different to that of the rest of those present, and as such I was (in Villam Bur's phrasing) pattern-matched as a bad guy. (In other words, I didn't use the shibboleths.)
Significantly, no-one seemed to take issue with the actual thrust of my point.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one.
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.