This is a cool concept! Maybe we can call this an "ellipse attack"? I don't like calling it downvoting because Reddit sucks. Flagging?
Flagging is good. It's how I think about it and how I think it should be used. When you say "I don't like this" about something, it replaces the lightning bolt with a flag. But downvote is most familiar to most people.
If you want to try it on a post/comment, I recommend this one: https://stacker.news/items/72540