Did you link your GA and Adwords accounts or are you just tagging?  Organic (not provided) is how GA shows all search traffic from users who connect to Google securely (signed into a Google account) so this could be branded traffic but there is no way of knowing in GA.

Some CMS would do that automatically, if the company you are working with had one of those (or the decision maker is used to seeing that) they may just think that it is normal and a best practice. At the end of the day, while odd now, it should not matter from an SEO perspective (just make sure that you redirect the base url to that page).