Yes indeed. In fact the article, by detailing how many other features of the bat were needed in order to have echolocation, makes the evolutionary descent of this even harder to fathom. Also it should be noted, that if echolocation was not as accurate as it is, they would not be able to feed themselves. Gradual evolution of this near perfect system could never have happened.
Hence, the "Blind as a bat" tease. :^)