I don't know the situation in the US and I don't think EU administrations require firmwares to be locked at the moment, yet I can tell that requesting locked hardware/firmware is a recurring debate within RF administrations since there were too many abuses (cf. this thread "just tell the hardware to lie" or "just use openwrt to disable DFS" above...) and too many interferences to other services (such as wifi-DFS-disabled interfering with weather-forecast radars). The 6 GHz wifi 6E has to coexist with fixed links, and administrations obviously don't want to repeat the mistakes and issues that are happening today at 5 GHz with radars...