You could say the same for the comments right here.

It's not often you see comment sections with that dynamic. One is prompted to respond with something that will essentially relegate them to the bottom of the page.

You may choose to support a two-point comment using an upvote, perhaps only to see it voted back down a minute later. Controversy in plain sight?

Not quite - the most controversial are the ones with both high upvotes and downvotes, with a ratio closest to 1:1.