Your logic is completely flawed. Robert Downey Jr. was 43 when he started as Iron Man and carried the MCU for over a decade, proving age is irrelevant when you’re the right fit for the role. The universe’s long-term plans didn’t hinge on casting someone young; they hinged on casting someone great. Trying to use “we need someone who can play him for 10 years” as an excuse sounds ridiculous when history has already proven your argument wrong.