Take a look at these wunderful images in the article. Read the texts and you understand that this is no ordinary b/w prints that are tinted. Amazing work! I read this in The Guardian.
Text for the above image.
Remember that photographers had to use b/w or color film years ago. Or just b/w if it was many years ago. Today it is easier with everything built into a camera.
Finally: Now I have seen the question, again. Is photography art? In my opinion YES it could be, but not every photograph is. Far from!