I have been using Wordpress for a lot of years. I have just started looking at the Gutenberg plugin.

I may just be set in my ways but... I have never liked the 'distraction free editing' screens but if I accidentally ended up there I could get back to the old standard editor.

Gutenberg strikes me as part of the old Mac concept that if you leave things out and make it all look flat it will make it easy to use. It also seems like cosmetic change for change sake. As an option it somewhat makes sense given that the traditional editor was also available.
As a total replacement, I have my doubts but will be waiting to see what is added and revised as the work on it continues.