One element that may cloud the issue is that when you are learning in a military environment, you are either there permanently (regular RAF), or at least there a few times a week for the whole day (UAS) and have various week/2 week long camps. For that whole time you live and breathe flying - ops, met briefings, plotting the NOTAMs and other mundane but important things as well as the exciting stuff - which all leads to a well rounded learning experience.
In the civvy environment you tend to go for the hours lesson, and then go home, so you don't get the benefit of learning from your peers and other instructors (that'd be those when I was.... speeches then
). You also don't get the benefit of those quality RAF instructional videos on press-onitis LOL and mess rugby during the dining-in nights
I think this plays as important a role in the learning process as strapping into a plane and throwing(?) it around the skies. Maybe clubs should encourage their students to do stuff like plot the NOTAMs on the notice boards and stuff like that....