Given it seems Plex has had its passwords comprised but little yet has been clarified am totally confused. If we logged in with a google account does this now mean ALL our google accounts and related apps are compromised? WTH is going on, did Plex just compromise everyone’s google account as well?
No, definitely not. You are not logging into Google with your Plex account.
You are logging into Plex with your Google account. And doing so is a one-way road.
However, your Plex account has also a regular password on it. So you still should change it – even if you are usually authenticate via your Google account.
Never setup a regular password with Plex, set it up with Google account, and always login with Google account. So I would now have to set up a password in Plex?
You are now using a different account than before. (compare the author identification of the earlier posts with your most recent one)
This one has indeed no password.
But the other one does have a password.