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I doubt it did any damage. Ten minutes should be enough to warm it up.
By "ceramic coating," are you talking about a body treatment or a coated header?
I would probably contact the owner of the shop, show him the video and inquire 1) why they left your car idling in the first place and 2) why they felt the need to rev your motor. I would then gauge his response to decide whether to write this entire thing up in reviews on Google, Facebook and any place else I could find to review his shop. Bad reviews can seriously damage a shop's business.
If it's a coated header, I could see why they would want to get it hot to start burning it in and check for CELs. I'd probably even let the rev limiter thing go if that's the case. But I can't imagine why they would need to do either of those things for a body treatment.
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