No serious company wants their key users to log into a platform with their personal accounts, this would be a security nightmare and asking for trouble
creating a “pro” facebook account is indeed disallowed by the facebook’s policy
I’ve done that multiple times. works well but you indeed to not have a clear separation between work and personal life, which is not good. I don’t mind it because I don’t use facebook, but it could be a problem for other people.
I honestly don‘t get how facebook think the world works…