But he also talks about document parsing and web dev. I think Python finds its edge when you have to combine things on the sciencey/mathy side of things with more user-facing software development. As the author said, it's nice not having to code switch between the a dozen best-in-field languages, when Python is highly capable across the board. Besides maybe C# and maybe Java, what other languages are as versatile?
True but have you seen most academic websites? They really aren't that into web dev. They are mainly concerned with static publication.
But yes Python is growing in this area and generally as command line scripting glue. I'm not sure its got all our lunch yet though.