Whether it reflects the opinions of the Vatican is and I would ask whether the Pope has to put his signature on this to show acceptance, agreement, whatever with it.
Has he ever said anything that would lead anyone to assume he disagrees? or has his comments been in agreement with what is in this paper?
That might be a area to explore. Meanwhile I see little reason not to think it has his approval, signature or no.
Noteworthy is the call for a global enforcement entity and the likelihood of this enforcement causing anguish and suffering. To whom is not said.
What you think you "see" is not at issue. As I said, if it were the Pope's opinion and he wanted it known as such, it would have been issued over his signature.