It’s a more abstract representation than code. Not as fixed, but helps greatly with designing the next steps.
I mean, I know I'm writing code, but I'm not consciously seeing, analyzing, formulating, or typing in code.
Edited to add: On reflection, the geometric vision does actually help me sometimes. When there's something wrong with the code I've written (be it a syntax or logical error), then the shapes react in a way that I'll call "dissonant". I pay attention to that signal and more consciously analyze what I've just done, to find the error.
I can't say that my own subjective feelings while coding are so useful! But I like to imagine that they're a meaningful contributor to my "taste" of what good/bad looks like
(Wish I could track down the reference)