I don't ? I have contributed to core, have used WP for a decade, created numerous plugins (wpgear, wordphing) and themes . I have an opinion about Gutenberg and am more familiar it's development cycle than most developers. How about you keep your opinion to yourself when it come to personal attacks.
This gives more context: https://wptavern.com/what-is-full-site-editing-and-what-does...