I think we already have some historical references regarding DJI getting drones into the US lately. Look at the the latest 2 or 3 models and their success rates, what makes the
M4P any different? Why would a
M4P be able to easily sail thru but the Air 3S cannot?
CBP is not a commercial shipping service, it's not cool to continuously probe their defenses with your repeated attempts of creative shipping to get product past them are rebuffed. At some point, it's going to get painful when the fees and fines and confiscations and the holds and refusals to return and destroyed and lost product starts to add up along with the customer complains, the loss of good will, and the repeated warnings from card processor. It's just not sustainable.
That's no way to conduct a respectable business hence the big f/u to America.