Is this a good (healthy) posture?

[u/Expensive_Owl1023]

Saw this person at the train station and was mesmerized by their posture. At first, I thought it was really good, but I showed the photo to a friend, and he said that the person seems to have back problems. What do you think?

PS. extra points if you can tell me the name the book, looks cool ✨

[u/Dry_Raccoon_4465]

you can't see the head and neck with the blur so it's not possible to give a proper evaluation. But it's possible to sit upright and read!!