It would be great if you could not talk behind my back with other users, but also your investigation means nothing, because who said that username was mine on Reddit, or that I am talking about that account?

I’m not, for the record.

Redditors already scream at people when they get a downvote and blame it on the person that replies to them, even if that person didn’t downvote them.

I can see this being dangerous and leading to a lot of bullying. I know k-bin already publicly shows this. I can see who downvotes my comments/posts when I open up the post in a k-bin instance, without even being a member.