This is a really interesting project. It's a collection of utilities for constructing rule-based models, as opposed to statistical models (i.e. ML).
I can see myself using it for exploratory analysis and constructing baseline models.
As for the "let's just draw the model" idea, it gets complicated as soon as you're dealing with more than one input parameter. The author has some workarounds, it looks like:
https://koaning.github.io/human-learn/guide/drawing-classifi...