Every account on Facebook must be attached to a real person and every person is only allowed a single Facebook account. A throwaway account is an automatic TOS

Every account on Facebook must be attached to a real person and every person is only allowed a single Facebook account. A throwaway account is an automatic TOS violation and can lead to an account ban. Facebook does actively enforce their TOS, so especially with new accounts it isn't uncommon for the account to get locked and Facebook will force you to verify your ID. In the case of Quest2 that would mean you lose all the games you bought on the device along with the Facebook account.