These articles are cropping up because Google (quite cleverly) utilized the "We're Open" mantra to gain a lot of momentum very quickly. Since the evolution of Android shows more and more evidence of "We're Open When Convenient/Beneficial", a lot of their most ardent supporters now feel betrayed/played.

If Google had said "We're not as secretive as Apple", there would be less bitterness now, but there also never would have been the sort of momentum/buzz they built early on.