I don't think the comparison is still valid. A game like Diablo is extremely tricky to pull off, no matter how simple it is to play. Lot's of companies have tried to emulate the game, and most of them failed.
Fair enough on the first, and true enough on the latter.
But again, I wasn't implying Blizzard sells junk. 'Fast food' is a somewhat humourous label I call the entire action-rpg genre as a whole. So if you don't think the phrase is a valid comparison in terms of describing the gameplay of/the genre itself, I'll agree to disagree. But it meant nothing - I repeat nothing - as a quality reference aimed solely at Blizzard as a company or Blizzard vs. another company, or how hard/not hard it is to make such games.
Actually, I think everyone is being particularly pernickety with your useful analogy, LC.
No-one in their right mind would dare suggest that McDonalds, for example, isn't ferociously popular ("over ten billion served" or whatever), and, though I'm not a regular customer, I have eaten their food and (when I was very young) more than enjoyed it.