In context though, you gave it as an example why people would not want more feature-rich software.
The supposed simplicity of Python over Perl has nothing to do with Perl being more feature-rich and that compromising its simplicity.
It seems like Plan9 would get closer to "Python simplicity" by adding features and extending interfaces. Which would be at conflict with the "minimalist MVP simplicity".
You present it as mutually exclusive. I believe it's the same word used for two fundamentally different aspects of software - less of a nit.