For me It clearly looks like an steemit abuse action I think you should consider using the #steemit-police tag too in order to expose this account behavior,
when we have a look at his blog his account is about 4 months old and have never made a single post, he only comments, sometimes, wich means he got downvoted more than upvoted in his comments which means he is not bringing any good thing to steemit.
A good thing is that due to his low reputation he is not able to harm yours, but this behavior still being annoying and I think a non sense violence like this should not be tolerated in here, lets expose it and see what others have think about it too!

Steem on dear friend ^^