If it didn't become "obsolete" when OcuSync 5 becomes the new standard, it would mean that DJI had stopped innovating RC transmission, and was just resting on their laurels. It's impossible to future proof technology. Be thankful for DJI's R&D...
Until the U.S. Customs holds on DJI shipments into the U.S. stop being a problem, it makes no sense for DJI to sell a product into the U.S. that cannot be reliably delivered to the customer, resulting in it just being returned to them, and...
If you want to save yourself some time, skip to 2:03 where Russ states the following:
"Shipments are reportedly being blocked at US ports by Customs and Border Protection, based on guidance from other government agencies including the department...