NA NA NA NA NA NA NA NA NAH. Fam, you got somethin wrong, Gege is a fucking troll, he does not consider yuuji as the protagonist of his damned manga, dude literally killed off both his best friends, father-figures, and even yuuji himself. Do you really think Gege thought to give Yuuji the limelight in this battle?
Fuck it, with all the things Gege told us about themselves and what they showed us up until this chapter and the first, I'm betting that Gege will wreck yuuji while fighting Sukuna (in his true form too) as another one of his poorly hidden attempt of making it seem like yuuji's going thru a "character development"
That was fast. Gege really said "fck this sht, it's time for my boi yuji to shine"