Sorry if it’s a dumb question. I’m not even knocking or shaming, I just think they’re really funny and want to see more if you know of them. Not accounts that downvote, accounts that ONLY downvote. Rare ones. Like weapons-grade haters.
I’d collect them in my user tags. And like, just observe what they respond to.
To be fair, people don’t undo their default upvote on their posts because of self-esteem, it’s just not noticing. You are right that a more authentic system though would simply not have any default upvotes, and additionally - not allow the OP to upvote their own posts./comments.