It sounds more to me like “distributing a Python application” (e.g. rtd, black) isn’t easy enough.
To install and use one (which is all Nathaniel is trying to do here) you make yourself into a system integrator, carefully locking the dependencies and runtime versions of each tool and setting up an independent venv, because that’s the best we have to offer for apps.
I assume if it looked more like “apt install black && black” then it’d be fine (because in this case, someone else has been the system integrator and you get to reap the benefits of their work).