A lot of these libraries also suffer from really ugly syntax, vs e.g. my library which overloads operators and attempts to "transparently" plug in to python's native syntactic sugar https://github.com/timkpaine/tributary
Looks like an interesting (& powerful) library - what problem is it trying to solve exactly? That wasn't clear from the README (the greek's library doesn't shed any more light on things either).
I could be mistaken, but I think it's aimed at domains where you want a reactive experience similar to what you might get if you build a complicated Excel spreadsheet.
In a spreadsheet you're basically building a DAG (assuming you're using it right) that automatically and efficiently recalculates the downstream nodes whenever you change any of the input nodes.
I think it's actually a pretty hard experience to recreate in many programming languages. I think in Python the thing that comes closest these days is Streamlit, but it can still be a lot slower to put together something than a really fast Excel jockey.
Suppose you had a HamiltonFrame that knew the graph that generated it and knew which columns were inputs and which were outputs. When you update any of the input values it could automatically recalculate any columns downstream of the modified inputs.