The more I try Gutenberg, the more I dislike it compared to the classic editor. I've used builders, and they make sense for pages or site builds.

But to use a builder/blocks for individual posts seems overkill, and far less intuitive than what's currently used.

As Steve mentions, I can see a lot of casual bloggers and content creators moving away from WordPress because of this (I'm already hearing from friends who moved to the platform, and their decision to probably move away again because of the new editor).