In reply to Matt B.

Ah hang on there for a minute!

Yes I suppose that is one way of looking at it.

Another way of looking at this would be to reflect on how long Apple allowed users to transition from OS 9 to OS X. About 5 years till OS X completely matched the feature set of the older OS and added extra functionality. You could dual boot between both operating systems and could even run OS 9 in the emulated true blue environment from within OS X.

It's not beyond the bounds of possibility that with the old editor UI still extant in WP 5 (just overridden by Gutenberg with REACT, requiring an extra plugin to disable) that you could have had a switch in writing settings to control the one liner add_filter( 'use_block_editor_for_post_type', '__return_false', 100 ); for turning Gutenberg on and off.

I think that Matt and the lads would have had better PR success if they had been more mindful, been a bit more considerate.

As for the third party developers sitting on the fence. When you are observing something that from a distance that looks bonkers (a bit like Brexit), that's where you remain until you see where the pennies drop.