Yes, I agree it's bad behavior. I've never heard of that particular witness, but any douche is entitled to run one; it's not Steemit's job to be a gatekeeper per se. Voting is an important responsibility. It's the voters who need to pay attention to which witnesses are trustworthy and which ones are operating questionable operations. There is a reason I have plenty of blank spots and am not using all of my witness votes. I'd rather feel good about a smaller number that I support.
Unfortunately, there is a witness had this bad behavior and you voted him as witness. For details please read The Dark Hand of Steemit