PG would call that a sitcom startup idea[1]. Sounds nice but who actually wants or needs that? Notice the parent commenter was not speaking from a position of wanting such a product. It just seems to them that it should exist.
What a product like that would theoretically look like is a fully customizable codebase that has drag and drop components. So both the dev and the non-technical person can do everything they want to do.
Thing is: that already exists. Wordpress is that. Along with many other open-source CMS products. The developer can dig in and change whatever they want to their hearts content. And usually they're not going to be happy with that either because of a) how hard it is to learn a huge and changing codebase someone else built and/or b) they're going to think those who built it made a bunch of bad choices and they'd rather just build it from scratch.
So I suppose that provides us a theoretical window for a product that pleases both the content creators and the developers in that regard. It should probably be very easy to learn and customize. Something like:
import { everythingToEveryone } from '@e2ejs';
import homeSpunUi from './bestUiEverBecauseThisDevWroteEverySingleLine.js';
import crapUi from './wordpressUiIfIdiotMarketeersWantIt.js';
import homeSpunComponents from './bestComponentLibraryEverBecauseThisDevWroteIt.js';
import garbageComponents from '/tailwinduiGarbageIfIdiotMarketeersWantIt.js';
// just gonna hardcode this until proven otherwise
const idiotMarketeer = true;
const cms = everythingToEveryone();
cms.ui = idiotMarketeer ? crapUI : homeSpunUi;
cms.components = idiotMarketeer ? garbageComponents : homeSpunComponents;
cms.mount();
A bare-bones, flexible skeleton through which the developer can load whatever they want, 3rd party or of their own creation. And content creators can use through any UI, with any 3rd party products the developer grants them permission to use - in my example, either one the dev rolled themselves, or Wordpress and TailwindUi.
Do I want that or need it? Nope. Does anybody want or need it? Maybe, I guess. The same way maybe some people may want or need a Facebook for horse owners[1]. I'm not going to build it to find out. I'd rather solve an actual problem I have or someone is screaming for others to fix for them.
[1] http://paulgraham.com/startupideas.html