You’re wrong; the Bluetooth Battery Service spec allows for a single device with multiple batteries and individual battery reporting for each. [0] They even give the example in that doc of earbuds which are one “logical device” but two physically separate pieces, each with its own battery.

And spare me the “private company” lecture; anticompetitive behavior should always be subject to examination and possible litigation.

[0] https://www.bluetooth.com/wp-content/uploads/Files/Specifica...