We've never seen THIS before - James Webb Space Telescope

Something has always troubled me about these telescopes and that is why the photons don't stack up when viewing light further away. It's like looking at a car a mile away but every car between the viewer and the target car is somehow invisible? Why don't photons obscure each other? You can't see a tree on the far side of a forest because of the other trees in the way so how do we see photons from light years away without the other photons blocking the view?