> pipx is a solution without a problem

It is a solution to the problem of: how do I run something without having to install it into my user environment and having to worry if it conflicts with package versions used by other things in my user environment. I often use it for simple code demos, share a pipx command to run code from some github repo I made to show how something can be done in python.

And it does not require any special consideration from package maintainers.