Butt was playing at Newcastle to a high standard still
He made 431 league appearances by the time he retired at 35. No idea on the starts / subs ratio but can guess that the Utd part would have had more subs that Rooney.
Rooney has 480 at 32. Most of which were at the best team in the country.
Thatís without CL games, England games etc.
No one, bar Newcastle fans, would have been bothered what Butt was doing for the last third of his career.