Should rate a 4, but rating a 3. I am biased because I am jealous of all creative folks who think iterations etc can get you there. Creativity I do feel is very inherent.
It's a nice book. Read it.
It's fun, interesting. You can finish it in a day.
The book takes a progressive view on what it takes to design this way. It's about iteration, feedback and testing.
Along the way, there are tons of great cases, evidences and technical knowledge that you pick up about creating such designs. Fun to read about all of that.
But again, I do feel creativity is something so inherent, that maybe you can't really learn it after a point. That's a very parochial view, but I am really shit at this. So, lol.