The contention in the linked article is that by pushing your "startup" app (which they imply to be a high quality app in a novel category) into the Android ecosystem first you can take advantage of the generally poorer app quality to get a "bigger piece of the pie". (This is the same argument that was made for years about Mac game development, btw.)
I'm not quite sure I buy all of that, but arguing against is has to be a lot more subtle than asserting that Android users "don't pay for apps".