WP has long claimed "decisions not options" best served the 80%. I don't always agree with that, but FSE isn't a decision. FSE isn't even giving needed options. It's abdicating making any decisions and giving users a very abstract and very complex tool (very cool tool, but still crazy complicated for an end user). I'm not sure how, but menus in FSE are even worse than in the customizer.

The users I work with are still 50/50 frustrated using Gutenberg. They do like it better than the Visual Editor, but not better than BB/E. Mostly because they can't control the things they want to control, like font sizes at various break points, make columns, or make sense of the bazillion blocks available .

What they really want is a true WYSIWIG content editing experience, not one with weird extra padding, or empty caption fields, nor where they can't tell how something will look on mobile while editing on desktop, etc... that all still confuses the heck out of them daily.

Finally, the above comment is really right, there are 1000 4+ year old tickets that ought to get more attention than FSE IMHO. I long ago gave up even bothering with trac when tickets I cared about, with patches, with testing, with clear and narrow scope, left unmerged for years.

Maybe FSE won't get merged for 4 years. That's be OK with me. I get the vision, I think it could be useful to come users, but not as it's currently built.

On a positive note, I do agree that block based sidebars would make a nice stepping stone.