This is sort of true. If you want to use the account as a developer account you have to register your phone number. Also probably to advertise.
I recently wanted to create an "Admin" account for a client I was developing a web-app for as I didn't want to link my personal facebook account to my work. But with the phone number requirement the account got flagged and rejected from the system.
I recently wanted to create an "Admin" account for a client I was developing a web-app for as I didn't want to link my personal facebook account to my work. But with the phone number requirement the account got flagged and rejected from the system.
Frustrating!