With 37 hours in training a pilot2be should be ready to fly independent of any individual FI
Well, I would say, it depends on several factors, mostly human variables, such as life experience and personal capabilities, which really boils down to motivation and skills of both the student and instructor.
Both the instructor and the student must work together to establish a sense of understanding of the flight training initiative. Each flight training must be undertaken as a unique perspective. Essentially, the flight training approach taken by the instrutor determines the success or failure of the flight training endeavor. Whatever approach is chosen by the instructor whose responsibility is to lead such an inspiring process will involve introducing and implementing systematic processes aimed at encouraging the aspirant to bring together the personality and skills necessary to successfully engage with aviation and sustain target and outcome achievement.
The ultimate target is attaining or earning a pilot certificate but it is imperative to also achieve the outcome which is having the skillset to confidently be at the controls. Most of the time the focus is on the first (get the paper or card) with the second as an afterthought.
So, it shouldn't be a surprise to see the process of becoming a pilot take longer than anticipated or expected. If the journey takes more time and effort as usual but attains the target and outcome, then the time and resources invested have served the purpose.
WP