could also be that these default aircraft with missing features will be completely redone by 3rd party developers eventually, just as most of the default FSX aircraft were - for the same reason. The sim needed aircraft content for release - as noted they probably had so many pokers in the fire throughout MSFS that a few missing features in some aircraft led them to the stated solution of just ‘sizing them all to the common denominators’ and making the default planes consistent with each other.
I doubt Asobo will redress them in any way at all - other than to keep pace with sim updates