Morse code...
xxx
Well yes, as a teenager, I had to learn it to get my "ham" radio licence.
Obviously no longer required today for aviation licences.
However, would urge pilots to learn to decode 3 or 4 letter identification.
No "speed" required... just to be able to identify.
xxx
Pilots learn so many "worthless" things... such as -
Who cares you know that LV is Argentina registry, and memorize 50 others.
And know 200 airport 3 letter/4 letter codes. I only knew a handful.
Morse code is not worthless.
xxx
Happy contrails