Blindly flagging other people's post is abusing the steem power you have. Whether someone use bot to upvote their content is orthogonal to whether the content is good or bad.

What you proposed (and doing), in my humble opinion, is hurting the community, not helping. If you really want to fix the abusing issue, go ahead and implement something smart to differentiate bad content from good (e.g. use deep learning to predict content quality, or, even better, predict DAU / MAU impact for steemit, if you can). What you are doing now, is abusing the trust people put on you and demotivating people to contribute content for the community.