Strange. Why is every single one of these photos out of focus?
The artist does appear to use a large aperture (or some other technique) to control depth of field. So there are portraits where the background is blurred, or in some, even parts of the subject (hands vs face). But, overall, they're mostly all in focus.
It is amazing how little of our field of view is in focus. Hold up your hand at arms length and look at your thumbnail so it is in focus. Notice that the part of the thumb immediately below the thumbnail is out of focus unless you move your eyes to look at it.