Evans made the sort of photos that people, especially photographers, look at and say "nothing much going on here, anyone can make these..." There are many more temptations for photographers these days, as well, what with digital technology and all that goes along with it. The temptation for all of us is to mess around with an image because we can, not because we should. And let's face it, most photographers look at the world and see...the world...plain and ordinary, and for many that is not enough. The world must be prettified, we must place our stamp upon what we see, or what is the point? Anyone can walk about with a camera, point it at a sign, or a delapidated street and click away, making Evans photos, can't they?
No they can't which is the whole point.