That’s an interesting idea! Thank you for posting the summary here!
For me personally though, the main point of SSGs is separation between data and representation. I don’t want to think about <div>s when I’m writing a post and I don’t want to care about the content when I’m writing a theme. Markdown plays a crucial role here, since it’s pleasant to write format (as opposed to HTML/XML) without too much clutter (but with many known downsides ofc, which are too minor for a successor to emerge yet).
I think with section deprecation Zola will take a step to unifying the content layout and the website layout.
Correct me if I’m wrong, but the proposed approach feels more like a linker rather than a renderer?