The problem is that the term "abuse" deceptively implies the existence of a set of objective standards. Normally, on platforms different from steem those objective standard are based upon compliance or noncompliance with the site TOS, but there is no TOS here. We make the rules by upvoting content we think is paid less than its value warrants and downvoting content that we think is paid more than its value warrants. We make our own rules and to do that, users need both an upvote and a downvote.
^^THIS is an excellent comment IMHO