They aren't griping that information isn't coming quickly enough- they're saying that it isn't thorough enough, and isn't being presented in a way that is very conducive to proper learning.
It's like sticking with a teacher who is unable to provide details about the concepts he gives, and instead just tells you to play it back over and over. It ends up being nothing but finger excercises. That isn't thorough, and it wouldn't be a good lesson plan. That would not be worth sticking out.
It isn't clear to me why you suggest they stick it out, when you are arguing that it won't be a good learning tool anyway (not a band context). You definitely seem to be riding the fence. Which is fine.
It's like sticking with a teacher who is unable to provide details about the concepts he gives, and instead just tells you to play it back over and over. It ends up being nothing but finger excercises. That isn't thorough, and it wouldn't be a good lesson plan. That would not be worth sticking out.
It isn't clear to me why you suggest they stick it out, when you are arguing that it won't be a good learning tool anyway (not a band context). You definitely seem to be riding the fence. Which is fine.