[1] https://en.wikipedia.org/wiki/Bluetooth#Specifications_and_f...
It does solve this by having a different topology. It supports a configurable number of streams in each direction, so at least in theory 5.2 surround with a stereo microphone should be possible, we'll see if it's usable
It also supports what is often called 'true wireless' earbuds by default, as each audio sink can stream only the channel it's interested in.
Finally there's all that broadcasting stuff, which works fine in our tests most of the time but also with a myriad of issues, some of them in the spec, others in the Android implementation, which is currently the de facto target to support
It's been so terribly bad since it came out. You know it's bad when there's even an xkcd about it: this one is from 5 years ago, joking about 10 years before that. https://xkcd.com/2055/