Gutenberg is Utter Trash
Made the mistake up upgrading to Gutenberg.
If you want to add hours to every post - and I mean HOURS - go for it. You have to re-learn every single aspect of posting even the simplest entry. My ads didn't work at all for a while. It takes a lot more clicks to place a simple paragraph, and every single paragraph, picture, heading, is it's own "block" whether you want it to be or not. Stupid.
I used to run a Varitype typesetter, and this software is utter garbage compared to that - and that was over 20 years ago.
Just my .02. Do what you want, but save the "Oh it's really great, you just have to get used to it," BS.