Everything has been fake since the invention of photography. The degree varies, but images have never been used in mass media to document the truth in any way shape or form, and especially not on the click-driven Internet and doubly so on Google Images. Even if an image comes right from the camera, you still have heavy bias in the selection process of what images get shown to begin with and which remain hidden.

If you are looking for truth in photography, you are about a 150 years too late.