As is so often the case with articles that cause frantic head-scratching and hair pulling (my lack of which I could possibly blame on people who write CSS blogs), they didn't bother to explain the case that the shiny new thing is supposed to fix.

Imagine trying to get someone to use Git without explaining the problems it's supposed to tackle. Who could come away from that conversation thinking "this is tool I must use" and not "that was confusing"?