I wanted to say something flippant, but dang with the halo on my shoulder urges me otherwise.
so here goes: books can also full of filler crap and useless and outright wrong material. just because it's a different medium doesn't make it any better for wasting time. in fact, a bad book can waste weeks of your life whereas a bad video on YouTube could waste about 10 minutes.
ultimately I approve of any tools that allow one to extract the information that they are after without paying the cost of giving more attention to somebody than they've earned.