I'm thinking of people who bought an Occulus Rift, which Meta then purchased and then forced people to associate a facebook account with it which they could then ban causing you to lose access to the hardware (and any games you purchased). A strong incentive to use the facebook account as little as possible since making a throwaway facebook account is now such a PITA. Infuriating since it was a bait and switch on an expensive piece of hardware. I guess the only winning move was to sell the device to some other sucker the moment the facebook purchase of Occulus was announced.
Don't worry this requirement was removed. Now you just need a Meta account which is totally different!