> I mean, an immutable website for consumption is exactly what most people want.
Do they? Then export your documents to an immutable website. That's why those options exist. Personally I don't want that. I want to edit my content fast and the hybrid-solution doesn't bother me. So we are talking here about a conflict of interest, not an anti-pattern. And solutions for this already exist, maybe they should just advertised more prominently?
> I want to differentiate content editing and content viewing much the same way in software development you edit source code which is then built into an immutable read-only artifact.
I don't read the compiled artifact, I use it, which is very different from what we are talking here. A more equal example would be reading code on github or reading in a code editor.