Justin somebody Webb? on R4 today asks a question -- are we in this day and age...?
He meant now or nowadays. In this day and age is decorative and may well rhetorically imply "now that we have come so far" although our main achievement is to overpopulate and trash the world. (I am in a wifi cafe and just now there was a man with an organic copy of himself in a buggy, the copy screaming wildly, and he leant back relaxedly chatting on his electronic toy. That's "this day and age")
We can say that we know what he, Justin Today, meant; but I suspect people who prefer decorative cliches. I suspect they have nothing much to say. In this day and age, that is