less fun fact: newer generation Intel Wireless cards do all this in their closed firmware and requires firmware updates to receive updates in the logic. no OS overrides anymore.
lesser fun fact: if the dominant ISP is running their WiFi modems with an wrong country code, your own equipment like Intel WiFi cards won't enable 6GHz (6E/7).
been there, done that. aaaaaaaa
Dutch post to complain about that ISP: https://community.ziggo.nl/t5/Internet/WiFi-landcode-uitgezonden-door-Ziggo-ConnectBoxen-onjuist-maakt/m-p/1205923