Interesting point.. but it also brings to mind that story about the pottery class with two student groups - one tasked with making multiple pots, and the other with a single most perfect pot.
(https://aliabdaal.com/pottery/
https://joshdance.medium.com/pottery-class-parable-or-real-e...)
It could be argued that finishing (and enjoying and extracting value from) books is a skill that can be honed by doing the quantity approach, at least initially.