Crazy. I agree with Dan to an extent it's probably been done upon finishing.
Or... A lot of detailers will polish, wash/hose then dry. If he's done that then drying will inflict the marring before coating. Also dependent on what cloths he's using to remove products.
Costs a lot to keep buying decent towels.
I'd trust dawn to have it looking well and by the sounds of it you have your wash technique sorted then it should last.
@Daniel Renault obviously don't paint the black cars separate from the rest so how can one have "hard clear coat" lacquer and the other not. Would you not agree that black just shows it up straight away.
Back to what I said about the Germans using the hard clear coat ... It never seemed to make a difference to marring from wiping down etc. But it's notoriously a f**king mare to correct.
Go back and find Jim's details of him doing Renaults years ago... Fast cut plus all the time because the lacquer was solid.