That's a lot of steem power. May I ask what you call abuse?
Becasue self-voting is not necessarily abuse. \
3 word comments = 5 bucks, that might warrant a flag but there is a lot is subjective here. Especially if others voted the comment up after.
With so much steem power going against self votes, I'd really like your comments on my in-depth post on the game theory of self-votes. The white paper is pretty clear in this aspect.