For what other purpose?
One of these U.S. sellers states,
"All DJI drones are manufactured in China. The open boxing and prior activation is required because this Universal Edition must be activated outside the U.S. to operate here, otherwise DJI locks out functionality. This is a manufacturer requirement, not a customs workaround. Unfortunately, it does not reduce tariffs, we still pay full tariff value."
Others in the U.S. selling still unopened, unactivated units in the U.S., when asked about these above representations, state this is B.S., as their sealed units have no such DJI requirement, and DJI does not lockout functionality, no matter where the unit is sourced from, especially not on a "Universal Edition."
I still can't make heads or tails out of this.
The seller who made these representations is an otherwise trustworthy source, but oddly now will not answer any follow-up questions, and has ghosted me.