Since the onset of Russia’s full-scale invasion of Ukraine in February 2022, unmanned aerial vehicles (UAVs) have emerged as a transformative feature of the battlefield. Ukraine’s Armed Forces, fighting a numerically superior enemy, have turned to a diverse arsenal of drones to level the playing field, using them for reconnaissance, artillery correction, electronic warfare, and increasingly for direct attack. This essay surveys the wide spectrum of UAVs in service with Ukraine as of mid-2025, ca
From what I read they actually work with 3rd party analog receivers from the drone itself.
Ex: https://www.reddit.com/r/fpv/comments/16n8ztu/hi_dji_goggles_for_analog/
That was a feature where you could attach an analog receiver to their Goggles v2. They have since removed it in newer Goggle versions. Their system is basically a walled garden now.