Not quite on-thread but I was instructing a young guy the other week in a glider.
He'd just signed up for 6 months ATPL ground school with a large training organisation not a million miles from where I live.
Apparently they do the ground school &
then start learning to fly!

He'd decided to try gliding purely off his own bat, & more power to his elbow.
But what about his class mates? What if they turn out to be rubbish at actually flying?
Or doesn't that matter any more for an ATPL?