Spankinator is a bot run by the insider Hive-cabal - in the case of my account it is set to downvote every post and comment I do at 1 minute. This is fairly typical.
Why?
I think it's a psyop - the potential effects are to lower my self esteme, drive me off the platform, make my posts appear less credible, and draw attention away fom the big downvotes that all my posts get from whales and/or controlled curation trails if I leave the rewards turned on.
At it's core, the Hive blockchain, like most social media, is deep state (CIA?) controlled.