Ali's a manager, so as a promoter his Mind is always going to be thinking of ways to market and promote his Fighters in the public eye. He's even went to bat for Frankie Edgar.
I see this as Ali speaking for Khabib when it comes to him being P4P #1 because as of right now, Khabib is spending valuable time with his Family celebrating the win, this isn't him denying Khabib's retirement, it's him saying that just because Khabib is retired, doesn't mean he shouldn't be on the P4P list.
Ali wouldn't publicly go against Khabib's words, certainly not at this point and time.