After averaging 10-3 the last several years at Georgia, Richt went 9-4, 10-3, and 7-6 at Miami. So yeah, washed up.
When he recently retired from Miami, he said “our program will be in better hands”. He wasn’t “washed up”, but he just didn’t have the juice left to run a college program. As a local, I watched it unfold over many months. It was time.
You can certainly listen to his exit statements and come to your own conclusions.