The problem with this approach, that I discovered is, normally what we assume as a filler can have a lot of information for other parts of our brain or life in general.
I have enlightened from many small details in articles, books and papers. While looks unimportant and irrelevant, these parts can knock down dominoes in one's subconscious, resulting in enlightenment or closure on another subject.
Even if that doesn't happen, I learn a couple of more things.
tl;dr: reading tl;drs only is akin to chewing caffeine powder instead of drinking coffee. bland, uninspiring and non-rewarding. What we assume as useless is generally is the spirit of the matter.