Another commenter (@tcpolymath) suggested a button, similar to the upvote button, which would serve as more of a traditional "like" on social media, without the monetary reward.

Honestly, I think he's on the right track with his prediction though. It wouldn't be good. People can't handle the truth; ignorance is bliss. Even today, commenting on a post without upvoting it is widely considered bad form. Could you imagine the toxicity such a button would generate on this platform? Hah!

I agree that voting on content provides better (more useful) information. It's not perfect; we know this, but that doesn't stop it from mostly working in the way it's intended.