It's definitely now in the wrong spot. I assume that once upon a time there was one rack against the wall, and it was only slightly irresponsibly placed, and now there are two racks and hey kids, heat rises.

The extinguisher should be directly inside the door so as not to attract someone to traverse farther into the building without an escape plan.

Of course if he did so then there would be no extinguishers in the picture and then we would also bitch about it.