This point keeps reappearing. Personally I agree with all of your comments here, very interesting.
I personally encourage my students to work through a quiz sheet I make up for each aeroplane. This encourages them to read through the POH to find the answers. I also recommend spending some money in getting hold of AFM's and POH notes if possible. You can be surprised by what you find.
Go forth, keep learning, keep flying.
Kermie