no photographer today publishes without "post production".

usually sharpening filters and messing up with saturation are the norm.

source: worked with tons of A list art, fashion, news photographers.

There are a couple of moderately well known landscape pros that do. But yes. I'd also note that this is a MF camera, with (what looks like) drum scanned film. This tends to produce images with much better color rendition and improved sharpness and contrast than you'd typically see out of a "normal" camera. The photographer also appears to have used polarizing filters in at least one of the shots. Given all this, none of the images look significantly manipulated to me.