Maybe, but we aren't at the critical mass where downvotes posts and comments are routinely hidden. People will see downvoted content and interact with it.
You are also missing that the other site used karma as a way to judge if an account should be allowed to talk more. I had enough karma there so that I stopped getting the "you're commenting too much" pause when commenting a lot. Some subs also used minimum karma points as a way to judge if someone was a troll or not. That doesn't exist here.