As a full-time WordPress developer I have to say that Gutenberg et al is one of WP's biggest blunders to date. The idea behind it is great of course, there is no doubt about that. I just think its release was very premature; WordPress being as popular as it is I would've thought that at least some form of intense beta testing would've gone into such a major feature change prior to it being even remotely ready for public release.

What irks me the most is that user ratings seem to be ignored completely by WordPress where Gutenberg is concerned; the same can be said for folks who, somehow, expect you to be familiar with something which is fundamentally broken at this point in time. The fact that The WordPress feature release roadmap went down the toilet this year is testament to that, yet they keep pushing for its adoption instead of removing it from the repository and fixing the bugs which have been breaking sites since its release.

Gutenberg is a novel idea, but it should be a completely optional feature instead of being forced down the throats of users and developers alike. There are plenty of other customisation plugins out there which do a waaaaay better job than Gutenberg will likely ever be able to do, with a development track record of years and years and great APIs for developers to interact with as they wish.

My point is, instead of trying to reinvent the wheel WordPress should focus on improving that which is already there. A more advanced and feature rich Classic Editor would've sufficed; instead they waste time and energy on something which has been achieved years and years ago by other teams.

In that sense Gutenberg has been a complete waste of time in my professional opinion, taking value away from WordPress as a website building platform instead of adding anything of value. Their biggest blunder was taking away people's choice of which editor to use, and doing so right from the get go. Big mistake.

I for one will keep avoiding Gutenberg until such a time that it actually becomes a viable tool/asset in my toolbox.

Just my two cents. Cheers.