If still hot enough to have flames, he can't even step on it. During the railway tracks still around and when you walk on it, you also can feel the heat. Lava even hotter than that, so, for me, it's quite impossible for him to stand there and look into camera. The lens or certain parts of the camera also should melt liao.
No doubt, Uncle Ricohflex. This time your cynicism has proven you right.
The photographer is basically admitting he deliberately set the fire possibly with lighter fluid and essentially posed for the shot. Which should just be about right, judging by the autoignition temperature / kindling point of the tripod which was exceeded sufficiently enough for it to result in a spontaneous combustion, the ambient temperature alone is enough to result in third-degree burns on him if that was the case.