Gutenberg gives remarkable agency to editors, which from one angle is great - lovely to be able to add a column, shift a block upwards, pad that image over to the right without any technical skills.
On the other... I don't know a web designer in the world who wants to give their editors complete control. And rightly so. Web design - good web design (and by proxy, UX) - is about constraint as much as it is about freedom. Probably more so. Knowing what not to include, and when not to include it, is the single skill that a great visual / web designer brings to the table.
So to see interfaces like Gutenberg where anyone can ...shift, adapt, grow, shrink, add to, remove... pretty much any element in the interface - is a total disaster.
Here's how "clever" it has become (and it is, technically, and in a fun sense - clever) - you can go into the edit screen of your Gutenberg website, and then you can pull up a tab to the "Block Pattern Directory" [1], hover over any block in the list, copy it, then jump back into your website and paste it. Wow.
Even if (and man, it isn't) that list of block patterns was beautifully, thoughtfully designed, what kind of awful, awful FrankenDesign is going to result from your client taking a random smattering of block patterns and pasting them into pages on their site?
As I said, there are slow steps appearing around being able to lock blocks and block patterns - but WordPress should have been much, much more thoughtful about being open, up-front and strategic with their acknowledgement of this. I know many WordPress designers who have upped and left to look at other platforms because they need client constraint, not "ultimate freedom".