I don't think Gabe White covers reloading at all in his coursework.
Neither does John Krupa from Spartan.
I think Bill Rogers glosses over it, except the strong hand-only reload (v-block in the legs, etc)
I think competition-oriented folks dwell on it more because it is part and parcel of competition.
I guess, I'd turn it around and say, if you had 15 minutes to dry fire, why wouldn't you practice some doing the reload?