Plenty of warning, pages and links to help people revise their accounts to continue to be able to access the site, and multiple posts explaining that it is due to how those external login sources are changing to become incompatible with Bungie.Net. Any "ancient member" that is concerned about posting on this site only needs to take a few simple steps in order to stay connected. Those steps are just as simple as creating an alt, which I believe nearly everyone is aware of and has done before. TL:DR Any who has an "old account" that is effected by this is either lazy or stupid.