I'm never liked this list, mostly due to Python but I think other languages are also incorrectly characterized. Guido worked on ABC and wanted something for scripting tasks on a Unix machine. Python was mostly inspired by ABC but some of the syntax was inspired by Modula 3.
Python is certainly not a reaction to Perl, I'm not sure Guido was aware of it when Python was born (they are close to the same age, actually).
> I think other languages are also incorrectly characterized
Agreed. This stems from a neat idea, but I think it's an after the fact rationalization (except for a few that are provably correct, like J). For example, C++ didn't stem from a direct frustration with C:
"Stroustrup found that Simula had features that were very helpful for large software development, but the language was too slow for practical use, while BCPL was fast but too low-level to be suitable for large software development."[0]
This list is cute, and provides good "taglines" for the languages, but I think it'd be met with a larger grain of salt if it hadn't been written by PG. :)
Python is certainly not a reaction to Perl, I'm not sure Guido was aware of it when Python was born (they are close to the same age, actually).