For the past ten years+, stagnation has kept most pilots in their seats. As a result, the major airlines have had the most experienced pilots ever in history in every seat, and have steadily cut practical training without tragic consequence. They may have reached the point where they are giving pilots so little training and stick time, that tragedy is becoming likely, at the same time they are bringing in inexperienced pilots, and seeing a lot of seat movement.
This combination of bad moves by management will of course be the fault of pilots, we will see a lot of new programs to beat up pilots to fix this.