Definitely is. Looking into it a bit, he seems to only down-vote content posted in categories where he posts. It is almost to wonder if he does that to "fight" the competition and increase his gains.
It's quite sad because we don't all do this for money, I would have made 30 cents with the posts he censored. He has much more to gain.
I think overall it lowers the intrinsic value of steemit honestly and brings negativity to the community.
The whole steemit system "filters out" the "bad" content, and bad content is subjective, the community should decide with their upvotes what is bad content and what is good content not one single guy. I don't see why his downvote should outweigh dozens of upvotes.
RE: Who put @sean-king in charge of censorship on steemit?