This is what should be happening everywhere. Laypeople are not meant to be up on the altar but out in the world doing what they do best, particularly if they have skills to help the Church. There were literally 22 (yes, twenty two) laypeople up there with the priest at last Sunday's Mass in my local parish. That's not their job.
Having know Archbishop Gomez back when he was "Father Jose", I would trust his judgment implicitly.