Random thoughts:
1.Comfy guns might not be the best self defense gun.
2. Training with one type gun and using a different gun to save one's life might have negative consequences.
3. Shooting high round counts in a short period of time such as in a class often does not equal more learning/progress.
4. I know many/most classes are high round count but talking about it in context of #3 might get us, the consumer, to accept a lower round count class with more teaching/learning.
5. There is private or semi private instructors that more tailor to #4 style.