I'm similar, I think perhaps it's a generational thing which slightly modified the title in a pedantic way.

The people who "grew up" with text books still crack new ones and old ones.

The current generation turning 18-21 don't.

It surprises me because I'm often asked why I knew X or Y odd perhaps esoteric fact or design pattern. Usually it's because I came across it in a book interested in something else.

It's that peripheral knowledge that is being lost when people use LLMs, and quick start guides.

Historically you'd have a team where skill, knowledge and experience was very variable but each person often brought another piece of the puzzle to a team.

Increasingly people have narrow knowledge "bases".

Does it matter? Perhaps not but it definitely has taken some of the joy of discussing problems and solutions out of my working life.