It seems like Gojo is back, but it's unclear why. The scene is strange and could mean anything. However, let's assume he is back and discuss it.

Once again, we are faced with the lack of courage in front of the fans and the lack of authorship typical of shonen. Gojo had his own narrative arc, beautiful, complete, and ended with what seemed like a suicide in all respects.

But the fans need to be satisfied, and so, just like it was for Levi, here he is back, for no reason, taking away the role of protagonist from Yuji once again.

Let's face it, Gojo has always been selfish and self-centered, as evidenced by his entire love story with Geto. His decision to stay dead with his comrades at the airport would have been, and was, the definitive confirmation of this.

Gojo's role was over, he had nothing left to say;

his closest comparison, according to Gege, is Kakashi. Kishimoto brought Kakashi back from the grave thanks to Nagato, but Kakashi still had a role to play: Obito.

Gojo, on the other hand, is finished. Geto is dead, he has proven his strength, his students have proven worthy of his legacy, and Yuji was getting the better of Sukuna.

When authors bow to the wishes of those fans who make a fuss, they stop being authors and become slaves.