A more perfect(*) solution would be separating sorting by relevance (formerly up-/downvote) from emotional reactions. There's the possibility of having a range of emoji reactions: agree, disagree, inaccurate, like it, bookmarked it, dislike it, find it funny, makes me happy, makes me sad, loveyou for this, what the fuck, find it's bullshit, (etc. but this is not necessarily a good selection). Some of the reactions (disagree, inaccurate ...) could also require a comment of at least (n) words to be left.

(*) oxymoron intentional

Edit: See here what people interested in development are opining about this idea: Add emoji reactions to posts, comments. #29