The Boogeyman Argument that Deep Learning will be Stopped by a Wall

I always am seeking out arguments against my present beliefs (or models of reality). Gary Marcus has a new essay titled "Deep Learning: A Critical Appraisal" where he points out all the many flaws of Deep Learning. Marcus has a vested interest in seeing Deep Learning fail, after all, he wrote a book in 2001, which he still is very proud of, that disparaged the nascent Artificial Neural Network research back then. Marcus is very motivated to point out the lack of success of neural networks at every opportunity. His latest essay is one in his many attempts to claim higher understanding by criticism.