You refer to Gutenberg as "the new editor" but as I understand it, it's a lot more than that--effectively a structural change that affects how plugins work and a way of streamlining how the whole system works at the back end in order to speed content delivery to the public facing pages. All of which sounds very good and necessary in terms of where the Internet as a whole is going.

BUT.... I run a site that uses a lot of customized content types, all very carefully done with respect to WP best practices, core compatibility-wise. But having tested Gutenberg via the plugin version I know we are quite incompatible with it. Guess I'll be making use of that other plugin I've seen--the one that lets you turn Gutenberg off.