Altitude is an inferred reading and airspeed is an inferred reading – both susceptible to external effects on the aircraft.
Aircraft pitch and throttle/thrust are not. It is not unreasonable to expect people whose core damn job is knowing how to fly an aircraft to know that.
Have you ever studied how an E.E.C works or any FADEC system? They use airspeed, pressures, pressure altitudes, temperatures, ram air effect. All classed as external effects perhaps? All affecting thrust? Definitely.
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