Oooo too much to list here. It's not Lean and it's not really UX. I have lots of videos on YouTube... Search Delta CX lean ux. I think I have one on the book, one on the canvas, and some others.

It's a non-viable approach that most of us dismissed when we read it. But most of us are nice and didn't leave the book a bad review. SAFe Agile adopted it and forced it on us. It's a root cause of some of our process problems at work.

I don't recommend any "speed over quality" methods.