While you return from your tangent, I'd like to say that I don't think it'd be too difficult for someone to ask a fellow member "hey, how come you Disliked my post?" or just further quote and respond to the post they don't like to share their ill feelings. I do believe that some topics and their responses shouldn't be subject to being Disliked, such as threads in Discussions & Debates (or maybe that's the one section they'd actually thrive in?) or Community Announcements, so some sort of option for staff to disable Dislikes in a particular thread or for a member might be a decent thought...
of course I'm just spitballing here, since I agree that Dislikes would inevitably cause some sort of commotion, but it's not like they would be detrimental to any sort of peace balance.