Apparently they decided that being able to flip back and forth between the original “classic” editor style and the new and improved block editor is too much to support, so everything has to start and stay in block editor. Among other things, it means going back to edit posts written in part with the classic editor function is nigh unto impossible without a fair amount of handwavium and irritation (on my side. I’m sure there’s a quick fix on the other side of the display).
Among other things that seem to have gone away is the Read More bar, which allowed me to post small excerpts on the screen, so that more posts could appear on the front page. I find that absence most irritating, because I don’t like having to scroll through a wall-o-text, and I suspect my readers are similar. Nor do I like having everything out in the open if people are not interested in a topic or if there is salty language or mature ideas in something.
The “new” editor was apparently designed for commercial or graphics heavy blogs where you have chunks of text and lots of images, with links to pages. That doesn’t suit my needs all that well, but right now I have to balance, time, money, and what have you.
So, I’ll adapt, and I apologize for walls-of-text and other things, until I can figure out how to work around these improvements.