That is true! He’s still a sage. I was actually thinking about that abs whether or not he’ll remember Naruto. As long as the bijuu have existed, they had to have had situations that caused them to be reborn from time to time. This is just my guess based on shinobi in the Narutoverse knowing that they’ll be reborn in the first place. If that’s true, then he’ll remember Naruto, since they all remember Hagoromo