so much for
(idiomatic) An expression of dismissiveness, disappointment, disregard, or resignation; something said upon rejecting, giving up on, quitting, or disposing of something.
For years, Volkswagen cars were designed to cheat on emissions tests. So much for "German engineering".
Well, I guess it'll never work. So much for that idea.
It is not so much for its beauty that the forest makes a claim upon men's hearts, as for that subtle something, that quality of air that emanation from old trees, that so wonderfully changes and renews a weary spirit. Robert Louis Stevenson
All the big powers...they've silenced me. So much for free speech and choice on this fundamental human right. Jack Kevorkian
If at first you don't succeed... so much for skydiving. Henny Youngman
We love people not so much for the good they've done us, as for the good we've done them. Leo Tolstoy
He avoids the official "heroes'" cemetery, done in such impeccable taste. (Why, he wonders, do the Germans do so much for their dead and so little for the living?) Heinrich Böll
It's because I'm alone.. If I could just feel it, it would be different, because I would not be alone. But if I were not alone, everybody would know it. And he could do so much for me, and then I would not be alone. Then I could be all right alone. William Faulkner