You, like the person this thread started with, are (deliberately?) missing the fire in the forest because you want to talk about the state of one tree. Yes, the standard should be improved to support multi-part devices, nobody here is arguing against that.

This entire thread started with someone trying to claim that Apple was not in the wrong by restricting these features, of which battery reporting is A SINGLE ONE.

No, I don't have a perfect solution for this one specific part of the problem, but that's also not been the my focus the entire time. Getting dragged into the weeds only serves to distract from the actually important point here, which is that what Apple is doing is anti-consumer.

Let's first agree that Apple should play on even ground with everyone else, and then we can whinge over how to correctly report the battery of three components over a single connection. Yeesh.