I have suggested (unsuccessfully), and still maintain, that there should be upvotes but no downvotes. (I am unaware of any algorithms that modify down-votes tallies ... and, if they exist, suggest that the perceived need for them is pointing out a problem with the whole idea.) This is not, however, the present consensus of the community.
I prefer to assume that anyone who posts here is doing so, clearly most-of-the-time, with the intent to be useful and helpful, even if I don’t agree with them and even if they’re wrong. (I was famously wrong, again, in a post just yesterday that somehow fell-out to become “Anonymous,” so that I can’t touch it now. Did I intend to be wrong? No. Would I
strike it if I could? Yes.) If a post is are good, or humorous or what-have-you, I toss out an “attaboy,” and sometimes I wished to be able to offer two. If they are not, I do nothing. If you don’t want negativity among a group of people, don’t implement the means to do so. But this is not the consensus.
I’d get rid of Anonymous Monk’s ability to post, too. But, “ditto.”