Dr Mike Israetel talks about this a lot.

This is good advice if you’re young and a beginner, but might not necessarily make sense if you’re older or if you’re past the beginner stage, depending on what your goals are.

The issue with the major compound lifts is that they build up a ton of fatigue and some injury risk. You really won’t be able to do it more than two or three times a week.

With more targeted lifts, you can get plenty of muscle stimulus, with less fatigue. Which can be be very useful if you’re going for muscle size.