Gary's logic sort of goes off its own rails a bit though. He says "In summation, most players find that the game of seeking and gaining, with the ensuing increase in character capability is the thing. Combat at best is something to be done quickly so as to get on with the fun,.."
If the goal is an increase in 'character capability' (by which we can only assume combat capability since that is the only capability actually increased by gaining levels in OD&D), then why is combat itself something to be done quickly so as to get on with the fun? If combat is thought of mostly as a chore to be gotten over with then why is increasing combat capability the main goal?
I think that internal logic mishap is what lead to later editions D&D becoming much better at modelling combat, both from the standpoint of attempting 'realism' (and here I think we can also substitute for the word 'realism' the term 'associated mechanics' as opposed to 'disassociated' or 'abstracted' mechanics) and from the standpoint of making combat more tactically interesting.