The concept of blocks really clarifies to non-developers what most developers have already in their head: a page is separated into a few descreet elements each of which must be thought of separately.
In the old editor this concept was always implemented haphazardly with a hodgepodge of custom editor buttons, short codes and page attributes.
Gutenberg makes it clear that the WordPress editor of 2018 is much more of a UI builder and a lot less “Word in a browser”.
