I wonder.
In the 'old' days, not all that many pilot 'calls' were made.
Why not?
Well, for one thing, and considering for a moment the L1011, all autopilot/flight director functions and modes are clearly annunciated, and visible to both pilots and the Flight Engineer.
So, the FD was generally silent, except for malfunctions.
For example, if the runway alignment mode did not begin, it was annunciated and
only this malfunction would be called thus...'no runway alignment'.
Yes, I know, heresy by todays standards.
However, it worked for many years and surprisingly enough, most airplanes never crashed.
Going further, when I fly the L1011 now, I fly with folks who operated in this minimal diatribe environment previously...and what a pleasure it is.
Folks who positively
know what they are doing, not being reminded every ten seconds.
Sometimes, silence is appreciated.