I only said it was half the issue.
The other is the catch 22/circular argument that is GA instruction. Unlike most other professions, no one ever commences flying with the career goal of being an instructor, and unfortunately the art of 'teaching' lies solely with those with the aptitude AND the work ethic for it. Those people a few and far between.
The schools can't change it. Ground schools are as guilty as flying schools. Money is always tight, to the point where the 'path of least resistance' is not only the most expedient way, it's also often the only affordable way.
You have to pay monkeys when you only own peanuts.