That quote editor is a great example of how the removal of WYSIWIG simplifies life for everyone. Easier for editors to add content, easier for designers to style it, easier for developers don't need to maintain.

Gutenberg tries to be both article editor (Medium) and page builder (Squarespace). I wish it focused on one thing.

Backend WYSIWYG editor also adds complexity, as developers need to style both frontend and backend.

Say, a user created an image gallery in Gutenberg, now we want to change the markup of all galleries on the frontend. How we do this? Since Gutenberg doesn't store gallery attachment IDs in JSON, we have to parse HTML via PHP to retrieve attachment ID from "data-" attribute, which is a horror.

Now imagine the same gallery editor, but without WYSIWIG part. Where each image is a simple square that can be reordered. Where data is stored in a simple array. It becomes to much easier for everyone.