It can 100% be debated how much PM impacted that next team.
That's like saying John Blake was a good coach because some of his players contributed largely to our 2000 NC team.
It's common knowledge that John Blake's recruiting played a role in the 2000 national championship team. Most of the crucial skill position guys like Heupel, Q, etc were brought in by the new staff, so I certainly wouldn't say he's responsible for 80-90% of the roster like Moser with ISU, but he gets his due for guys like Calmus, TRRW, Woolfolk, and McDougle.