“Actually, many people found it odd that McCarrick only served as Archbishop for five years. Benedict had been pope for less than a year and replaced McCarrick as soon as he turned 75.”
You may be thinking of his role as Cardinal of Washington DC; he was the Archbishop of Newark in NJ (a larger, though less visible diocese) for much longer.
Yes, but you’d expect an Archbishop of Washington DC to last a little longer. John Paul II probably would have let McCarrick stay on for a couple of more years.