Lets look at his 3 (probably) MVP years because 2019 was all him being a runner and it was more of a Cam Newton MVP whereas the past 2 were more about the passer.
2019: 3127 yards 66% completion, 36 TD 6 INTs, 7.8 Y/A, 1206 rushing yards
2023: 3678 yards, 67% completion 24 TDs, 7 INTs 8.0 Y/A, 821 rushing yards
2024: 4172 yards 67% completion 41 TDs 4 INTs, 8.8 Y/A, 915 rushing yards
Even the numbers clearly reflect growth as a passer and a shift towards being able to push the ball down the field passing and that is ignoring the obvious eye test of watching him go from objectively not a top 15 passer in 2029 to objectively a top 5 one this year.