Just saw this on BBC news:
DJI drones to gain privacy mode after US Army ban
Looks like we’re getting an updated GO 4 app next month which will allow us to enable a privacy mode.
The full DJI press release is here: http://www.mynewsdesk.com/uk/dji/pressreleases/dji-develops-option-for-pilots-to-fly-without-internet-data-transfer-2107376