This is not because Casillas has sobered up, but because he has sensed danger and despair. He simply cannot "compete" with Chen Zhong.
Once due to contracts, in order to get a higher salary, he threatened the top management with a transfer, which landed him on the "blacklist". Then Ramos followed suit, and other players did the same, making this impression even deeper. He even missed the chance to wear the captain's armband because his image with the top management was not as good as Chen Zhong's.
Moreover, at Sports City, he returned to the various tiers, where legends of the Monster were widespread, especially after winning the Best Goalkeeper award. Casillas was shocked to find that most young players set their goals or idols as Chen Zhong.
They regard Chen Zhong as a role model, and even young goalkeepers do the same.
Even for those who take him as a role model, he is only one among many, and often even second or third choice.
