I think I’ve settled on the latter. Disagreement is maybe best communicated by the absence of an upvote? And downvotes work best when they signal something that is just off base, and while not reportable, is not appreciated at a broad cultural level.
I use it as:
up = this should be here
Down = this should not be here
Course I have my own biases but. I don’t want to see people get downvoted for saying things I don’t like just because I don’t like it. Also anyone who downvotes honest questions is just being mean.