All true, but is it any wonder nobody knows what to say or readback these days, with the contonuous torrent of (often unexplained) changes that sneak in 13 times a year. Much of it to do with the continually buggering around with the airspace and CTAF's for god knows what reason.
A fair smattering of ATC's are in the same boat as pilots where they just don't know what the latest change is either - it's called change fatigue, and it is accellerating.
Many of the wunderkinden who come up with this bull**** don't appreciate they are making things less safe by always tinkering with it.