I see those complaints because it began as a "survival show" kinda like Battle Star Galactica. So we're always thinking about dwindling resources etc.

But all of those types of shows eventually abandon survival as a tension builder or plot driver because it's just too tedious to write a story that way-- especially with different teams of writers, producers and directors-- keeping a consistent tactical situational awareness would be boring really. And there are only so many stories you can tell with that frame--- like most 'problems' on TV shows wouldn't really matter at all in the context of surviving the night in a zombie apocalypse.

If TWD had only been a 15 episode one-shot series it probably could have told the whole story in a very awesome way.