iPhone - Bluetooth microphones always too quiet

As there are many people who have problems with Bluetooth headphones and their microphone volume, im starting to guess Apple is Influencing that on purpose to increase their air pod sales (which are obviously already fantastic)

I also have this problems and it seems that there is no way to solve.

I can't imagine that such a volume problem is so difficult to solve for people who develop such great products. That should be not really more than a bug fix.

Who agrees?

Br,

Philipp