When Gutenberg got merged last year in an alpha state at best, I predicted that it would take two or three WP releases to be really usable. Well, I'm using 5.3RC3 in one site and while the editor has come a long way from the 5.0 version, it's still cumbersome to use. I'm worried because I'm starting to think that its "flaws" are structural and will never be "fixed".