I actually require the book the Jon Bodner was talking about in a class I teach every couple of years. The students who do well (the ones you would want to hire) will read it, the others will skim or try to summarize it
This study tracked study resource usage in 2021 and mentions a study in 2006.
In 2006 medical students spent 10.8hours per week studying with textbooks, on 2021 4.2hours.
So under 40% the textbook usage as 2006. That's a fairly precipitous decline and it's pre-LLMs being mainstream. I down chatgpt 4/5 have sent the students back to the library!
It mentions question banks have expanded as have online resources. Also learning style has changed from lecture based to problem based learning.
I can't say this is objectively bad. But that I'm sure it contributes to narrowed knowledge bases.
The last three years more or less none of my students have bought the textbook for the subject. That is pretty mind blowing. In turn they expect a complete textbook from my lecture notes, which isn't possible.
I get that textbooks are getting more expensive though.