I understand the people who feel that Gutenberg does not serve the best interests of the WordPress community, but my concern is that I rarely hear a “I think we should be working on *OTHER REALLY BIG THING* instead”. If you are going to critique the WordPress core development roadmap, then please offer alternatives.
Disclaimer: I disagree that Gutenberg only serves Automattic or other large hosting players in the WordPress ecosystem. As it evolves, I feel that it will enable easier site and content editing compared to the current set of WordPress capabilities and that very much serves a large swath of current (and hopefully future) WordPress consumers.
Related reading, especially the comments: