Totally concur with people’s concerns about this update and I’d just like to urge WordPress to PLEASE address them in a later update, ASAP.
I’m not against the block design idea in principle, it’s more the execution of it. I’ve just made my first blog post on 5.0, and I experienced a lot of bugs; some huge text formatting issues which have placed paragraph text in very weird places; and a lot of error messages on my PC for any edits I make on the mobile app.
I love WordPress and to me the format has huge advantages over competitors, but the execution of this update has been extremely poor and I really hope you work to address these problems.