The scale and quantity of software being developed is just too much for traditional Linux distributions approaches. I personally rely on Debian to know that most of the packages I use are reasonably secure. But often I need to sacrifice flexibility and bleeding-edgedness.
And it couldn't be otherwise. There are 339,267 projects on PyPi.org. I bet a good percentage of these are riddled with security flaws. But people use them anyway. How many distro maintainers would you need to handle this workload? Is it worth it? Does anyone care?
It looks like people care much more about experimentation and speed of development than stability, security or coherence and cleanliness of the solution. The author seems to feel this is wrong from an engineering (or even moral?) perspective.
I am also uncomfortable when I have to deal with Python and I have my own favourite few tools... but perhaps if Python users really wanted a single solution then it would already exist.
If you are instead convinced that there is this need and no adequate solution, then congratulations, you just found a gap in the market. Go on and do better than everyone else before you. Relevant XKCD comic is already in the article...