I remember not long ago doing some ICUS with a new person in Cairns. Tower asked us to follow the dash 8. I was then asked "which one is a dash 8?".
Next flight was told to follow the 717. Didn't know what that looked like either.
During this persons training they had never, done a fuel drain, put oil in the engine, signed the MR or fueled the plane by themselves. Apparently only instructors were allowed to do these things.
Some people need a lot more than a few hours in a 210.