Two disclaimers: I know nothing about politics and I don't claim to know anything about them. I trust the moderators of /r/askhistorians to provide accurate information about past events.
Second, I know that posting comments off of other websites is poor form. I only do it when I feel that it is truly interesting.
I don't think it's really bad form to link to certain subreddits like AskScience which are strictly moderated and generally feature top level replies by experts. I wanted to submit a post on /r/badhistory that was probably better than a lot of baccalaureate theses but it was about the Confederacy and I think we've had enough of those recently