People who use WordPress to publish their poetry, their photographs or communicate to their customers their small business (about 30% of the internet) may not even know about Project Gutenberg. Ostensibly Project Gutenberg began as a new editor. Given how mediocre the WordPress TinyMCE editor has been from inception (note: we created FV WYSIWYG on FCKedit ten years ago and it's still the only editor which allows a writer to switch to code view and back again and not have all his/her paragraphs and line spacing arbitrarily changed), a new editor is a laudable goal.
Unfortunately Project Gutenberg turned out not to be an upgraded post editor but a new vision of WordPress in permanent Page Builder mode. There have been serious writings about the tyranny of choice. By forcing writers to make decisions about blocks, multiple photo layouts, forms, sliders every time they create a new paragraph, there are two results likely: