Originally Posted by cherokeesam
No, it doesn't. As Spideymouse said, sliding timelines have been par for the course in both comic books and long-running TV shows forever, and nobody has ever questioned the aging factor. Case in point: the Korean War lasted less than 3 years, while M*A*S*H* lasted 11 years.
MCU time =/= real time. Again: that's why they don't use real dates in the Marvel movies (other than 1942, in CATFA).
And dont forget.. Bart Simpson has been in the fourth grade for the last 15 years..