Dear OP...
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First of all I am not in the States...
And yessss... I know about the QFE despite having had a long career in USA.
My airline then, PanAm, trained pilots to use QFE for flights to USSR and China, as well as metric units of height/altitude.
QFE procedure was the procedure with Eastern Airlines... and American Airlines used QFE as well, even within the USA, until some 10 years ago.
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Here in Argentina, I continue to teach QFE/metric for occasional charter operations into these countries using it. As far as I know, all USA airlines operating in Russia and China have QFE in their classroom programs.
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Please be aware that airlines also have flight instructors and examiners, which is my basic activity with my airline. Line flying is only occasional for me. I also volunteer flight instruction "for free" at a local aero-club, teaching QFE for local touch and go practice... this with old airplanes such as Piper Cubs, DH-82s or Chipmunks... (= real airplanes, not modern junk) -
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I have a flight instructor licence...
So, can I get some hospitality in this forum.... ¿?¿?¿?
No harm... just my 2 centavos... cheers!
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Happy contrails