I think the point was universal dongle with universal BLE / radio protocol. It could still have different encryption schemes and keys for each device / manufacturer by upgrading / installing drivers (so in software), but at least the radio packet protocol would be the same which would keep the hardware universal. Kind of like how smart home hubs (WiFi +/ Zigbee +/ Bluetooth +/ 433MHz / etc) work.

But we all know how creating a new “universal” protocol goes from experience (ie USB “standards”).