How does the “average” help? It still isn’t actionable. It doesn’t tell me whether I need to charge my case, put my left AirPod in a fully charged case or put the right AirPod in a fully charged case.

If you know the average of those three, what does it tell you?

What other manufacturers have figured out how to report three devices that represent to a Bluetooth host as one device in a standards conforming way that will work across multiple hosts?

It’s not that I am defending a trillion dollar company - the idea of averaging three completely different devices is non sensical and provides absolutely no benefit to the end user. If you want ti complain about anyone - complain about the standards body.