In this case I would say no. He did it, (in my opinion) to show people a problem with the self vote. You see it is not against the rules. It is in fact an option when you make a post or now even a comment a little check box that says "Upvote post". He wants to change that. While it is not against the rules, the steemit community believes it should be used in a more ethical manner. In @slowwalker 's use it was used in an ethical manner, once again that is just my opinion.