I'd actually go even further and recommend to avoid pop science books altogether, and replace them with introductory books, lecture notes from reputable lecturers, and video lectures on subjects.
I know there are lists of the best texts on this site, so I guess I could use that to find reputable materials.
I guess ideally I'd like to use pop science books to introduce me to topics in a light and entertaining way, but I think you make a good point that if I'm going for efficiency the ways you've suggested are better.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.