On the contrary, it's the strongest season of the series. Dean has very much asked, "Why isn't God helping?" God doesn't bother to explain Himself in real life, so why should He on the show?
The point of the season isn't to depict God in any specific way. The point is what's happening to Sam and Dean as a result of it. The strain is getting ever worse. Sam is well on his way to hell on that road paved with good intentions. He gave into Ruby last Thursday and I don't mean sexually. Full on lying to his brother again.