In reply to Otto.

By saying "nothing about the block editor prevents front end submissions or editing", you might as well say "nothing about my kitchen chemicals prevents me from finding a cure for cancer". Simply said, for what I'm talking about, it is NOT possible with strictly using Gutenberg blocks, and o2 does not even come close for an acceptable solution.

Gutenberg is released for 14 months now. CAN ANYONE name me a plugin or a theme that without using Custom Fields, and using only blocks can achieve a Real Estate Website, a Classifieds website, an Auto dealership website, where a real estate agent can list properties on the front end, and at the same time a site visitor can make a complex query? Such themes/plugins do not exist, and gee, I wonder why? However, there are dozens such themes/plugins that do utilize Custom Fields, BUT by doing so, the database will grow exponentially in almost no time, rendering WordPress unsustainable for LARGE websites - and that's all I'm saying. Once again, the developers are creating another half baked product... Even Gutenberg as a page builder is a half baked product !