In reply to Matt.

I'm intrigued by this comment:

I set the original goal for Gutenberg usage pre-5.0 to be 100k sites and 250k posts. We obviously have blown by the number of sites, we’re at 10x where I expected us to be this point, but we don’t yet have good numbers for the number of posts yet.

This assumes that a good level of posts would be on average 2.5 posts per site install (fairly small). Yet the site installs is already far higher than this expectation, but the number of posts are much lower than expected - either less than 250k or less than an average of 2.5.

Either way, this leads to an assumption that it may be installed, but it's not being used. Therefore pitching the number of installs of Gutenberg vs Classic isn't a great signifier of what is happening on the ground.