What does substance mean in this case if I may ask?

I have tried to write my thought in another comment in here but the gist of that was suppose that I don't feel excited (comparatively, not by a long margin which is why asking the question in the first place, usually I use it just for prototyping/my own use case purpose) just writing code solely but I am interested in everything else from start to finish

Would this be considered substance or not (considering if the idea is still decent lets say)? Or is the project considered more substance if its solely written by human code

Because I feel like I remember simon's post in here about how he made an independent (I think HTML related tool) in python (iirc) using independent tests and so sort of simon's use cases are how I imagine AI use cases to be (reasonable for the very least)

Would you consider this an anamoly (given simon is simon and he's probably the most well known blogger in here) or something repeatable?

Or like, I am just curious whats substance is. Because I feel like I can build projects but they end up just being a github repo no explaination and I'd love to polish some off my old projects which are dusty with better substance and probably even share it on HN and if I don't do this, then it will still be partially better to know when I might make a project in future & I can try to keep that in my mind hopefully as well.

Funny how in a world of AI, human curation is becoming more important.