I think selfvoting is not a problem. If someone has been working on a profile development for month/years or invested money into the profile development than it is a reasonable thing to promote our created articles. If selfvote give an initial boost to the article value, sometimes help to others also, because with the curation rewards others gain income from the selfvote. If we look into this feature it will also help. On the other cases if we deny the selfvote everyone will register another account and delegate SP to vote to the newly created post. Is it better ? I think not :)