From post #5.
simply because they do not have a basic handling skill background
There is a huge difference between maintaining skills and actually learning the elementary to a degree of instinct and reaction.
I believe we have a big numbers of pilots that are excellent professionals, but have been forced nor had the opportunity to do the amount of repetition to actually truly learn certain basic (yet demanding) skills of flying.
We see the same pattern on our roads as we now start to see in the air. Modern cars safes you 99% of even severe handling errors, making it both unpractical and unnecessary (and many time impossible) to learn basic handling skills.
The original "flying finn" and pioneer in driver training Mr Rauno Aaltonen is quoted saying, "modern drivers need help from their cars, the typical drivers handling skills are totally sub-par".
Rauno:
Rauno Aaltonen's driving lessons. - YouTube 