It matters to someone
They're worth something to the people hiring, thus a requirement or a fulfilled requirement within a given time. I personally find these useful only in that at least the person has an idea what's going on, but overall its book learning. That means to me and from what I've seen generally not much that was learned will ever get used in its entirely. Since these weren't around some time ago and now appear all over they are a "cash cow" to those offering them besides any benefits provided by them. It's getting to a point you need a certificate to turn-ON a PC it seems, IMHO.