The duration an account is spending on editing Wikipedia posts is one clue to determining if it is a question of a person or a team at work. Teams may benefit from using a single account as privileges are tied to accounts, if I understand it correctly.

This user is however the subject of a ban: if it was a team the clever thing to do would have set up a new account to circumvent the ban. So, Philip Cross is probably just a person with a mission. Agree that we can refrain from any further psychiatric diagnosis at this point.