We have recently experienced a security incident that may potentially involve your Plex account information. We believe the actual impact of this incident is limited; however, action is required from you to ensure your account remains secure.
I seem to recall a lot of people saying this is exactly what they were worried about when Plex forced everyone to central authentication servers.
It’s such a pain. On the one hand, central account management has allowed me to easily explain to and sign up friends and family who don’t trust anyone except Google/Facebook/Netflix/etc but I also hate having these breaches happen.
I started converting an old email address years ago to a new email hidden behind an email redirect due to the amount of breaches the old one was involved in. An absolute pain to do but now I can just update the proxy email address in the face of a breach like this.