Ryan Adams is the source of many jokes in the musical world because the amount of material he releases. Outside of the two albums a year he'll ship out, there's also the countless number of bootlegs and unreleased tracks that you can find on his website and all over the internet.
But I see this simply as a very good artist at the peak of his creativity. Did anyone fault Dylan for coming out with three amazing albums in a 15 month span? Granted, I'm not comparing Adams to Dylan in terms of how great the material is (after all, Adams is good, but he ain't Dylan), but simply in a numerical comparison.
Many artists don't really do this anymore and when something as great as Gold or Heartbreaker gets released, I consider it a blessing.