Messi cheat code is jokes. Went to PSG barely did anything treated the whole spell as light training and conditioning and went to win the World Cup. He did the same thing, went to Miami got used to the climate and temperature and looks like his old self
People talk about football being in a bad place but I'm watching guys like Messi, Mbappé, Yamal, Haaland, Vini Jr, Havertz, etc tearing it up on the biggest stage. I'd say it's doing just fine.