We need to stop allowing new Twitter oAuth logins. We are getting too many duplicate logins and getting emails from twitter is really painful.
Anyway, if we disable Twitter oAuth, will users who currently login with Twitter still be able to do that or will it disable Twitter for all current and future Twitter logins?
I do believe that, if you disable Twitter social login for a given app, users will not be able to select Twitter as a login option, even if that is what they previously used to create their profiles. To work around this you would need to use account linking to link their existing profile to a new credential.