In reply to Shane.

> No one will be forced to use Gutenberg.

Sure, and your site with WP 5.0 and forced GB and "Classic Editor" will be 3-5 times slower in front end and 8-10 times slower in backend, that's what makes customers happy... not!

Just test it, but with a real site, which uses WP as CMS. Not with an out-of-box test install with twentyseventeen and 5 blog entries...