Because generally, in broad strokes, a good economy causes good everything else. If it's easy for people to get a decent job, then people lead happier lives, fe

Because generally, in broad strokes, a good economy causes good everything else. If it's easy for people to get a decent job, then people lead happier lives, fewer homeless, lower crime etc. If goods are accessible and affordable, everybody goes yay. Diseases get treated, lower suicide, etc. Obviously when you zoom in it's not black and white at all, eg the US has incredible GDP but also lots of abject poverty. But even in some imaginary proto-USA where the inequality is 10x worse, if the economy shrinks, fixing that is going to be harder than when it expands. I agree with your objection that it's ridiculous to do "everything" for the economy. But wanting the economy to be healthy should be a thing everybody can get behind, from far left to center to far right, even if they violently disagree about how to take it from there. So a paper called "the economist" worrying about the economy sounds pretty sane to me.