HeliGaz says
when will people learn to do a THOROUGH 'A' check?
Answer (or partly the answer) is when Flight Instructors take the checks seriously and teach students properly how to do one.
Too many of them don't even ensure the student knows how to do a proper pre-flight. They run through it a couple of times at the beginning of training and then send the student ahead while they have a coffee.
That's how it is here.
Is it any better in the UK? I doubt it.