>It is telling that he only mentions web frameworks and leaves out what is arguably the most important Python library: NumPy. That alone tells me he doesn't truly understand the whole Python ecosystem and, therefor, it's culture.
"Most important" for who? I've used Python since 1999, and have never used, had a need for, or even installed NumPy.
It's mainly important in the scientific community, not to most enterprise, startup and independent python developers out there.
Good developers move around. I may have done scientific computing a few years ago and be on "web startup" now, or vice versa... And being able to move around and still use the tools you love is F AWESOME, let me tell you!
...but the side effect is that when moving around and keeping the same tools, you tend to also bring one mindset from one area to another, so a bunch of pythonistas hacking on a new web framework may have brought with them small pieces of mindsets from the desktop apps world, systems an ops or even scientific computing, and this is GOOD, IMHO, though it may make certain rhythms of development seem "out of tune" with the speedy "jump and run towards the newest squirrel" style of learning or development...
"Most important" for who? I've used Python since 1999, and have never used, had a need for, or even installed NumPy.
It's mainly important in the scientific community, not to most enterprise, startup and independent python developers out there.