If those are your examples, then you are misunderstanding my proposition. Some of the reasons you suggest to downvote are not good reasons to me, but that’s point, everyone has their own criteria and their own preferences for the comments they would like to be reading over others. By denying them the ability to choose, you are imposing an arbitrary and fallible karma system. Hiding it really doesn’t fix it, you are denying the alternative because you feel the absolute worst case will occur. Yet right now it is possible, and does not happen.
Users could also be doing and reporting the checking up - if votes were transparent - and they would be able to do it on far wider scale. Oh those leopards, eating your faces, vote obfuscation proponents.