Or he farms glimmer in the raid like I do.

Nah, it's mostly from playing with randoms and teaching them how to do the Raids. I only ever ask for experience when Raiding if it's near the weekly reset and I need to get things done.

Yes, teach me by dying. Makes total sense. "Hey guys.... Let's spend forever doing this -insert Raid- run. Not like people have other things to do then 'learn from dying'."

What do you learn when you need a self-res to save the day? You learn to rely on someone with self-res. You never need to improve because someone else will be there to do the work for you. People learn best from their mistakes. To learn best, those mistakes need repercussions.