I think the book has its value because it is a journal which was never meant to be published. It is a deep dive into the mind of an emperor. I am with you in thinking that it is different, people admire what it stands for rather than what it says.
I juggled with the same thing regarding paper books and ebooks. I have to go with ebooks as they are affordable and I can peek into them whenever I want, and building the habit of reading in digital form is the need of the future.
I agree with the fact that the book has been praised a lot. That's what I came across from those who have read it. Regarding, physical and e-books. It's easier to go for the digital version. But, when reading the book itself, I still prefer the physical copy.
Thanks for passing by,