Google always did a great job of returning the results we wanted. When they stopped returning exact matches the results started to fail.
I agree absolutely.
In Adwords when I had complete control I got exactly what I wanted. When Google started sending me "Broad Match" and "Session based Phrase Match" etc things went badly wrong. I've got control back in Adwords by switching these things off and my conversion rate and spend is back on an even keel.
I can't get control back on organic searches so Google sends people who don't want me and I don't want. Its a bit like folks standing in line outside butchers shop to buy bread.
And what really bugs me is they think they are oh so cleaver. IMHO they have great brains going in the wrong direction.