The DC Universe's plan for a younger Clark in Superman: Legacy is already avoiding a major superhero movie trap. James Gunn and Peter Safran will soon reboot the DCEU with the new DC Universe. The DC Studios co-CEOs have a 10-year plan for how the shared universe will develop, and that plan includes a younger Superman taking flight. Henry Cavill will not be returning as the Man of Steel, with the actor simply being too old for the story the new DC team wants to tell with Superman. Beyond his executive job overseeing DC's creative side, Gunn will also be writing and directing 2025's Superman: Legacy.
https://screenrant.com/dc-universe-superman-young-plan-origin-story-avoid-reason/