It's just the way he finished it which is nothing wrong with it. The crown can be done in a few ways.

That said,being this a stand-alone cabinet, the filler near the wall throws the symmetry off a bit. Not sure what is under this cabinet I would assume the need for that size filler was to line up the cabinet with something below or just keep it away from the wall for better access and keep the handle from hitting the wall, etc.

If the filler was made smaller and the crown would be done with less reveal on the left side it would look more symmetric. Here is an example.

Sometimes painting recessed fillers such as yours the same color as the wall can cause it to visually recede. It becomes "part of the wall" instead of part of the cabinet.

The crown? Probably just a matter of style and proportion, as well as your expectations. How that specific crown relates to the style of the house and your expectations.

The crown looks to be flush with the cabinet doors on the front and overhangs on the side. So, yes, Amore F - it looks odd. Really think I would ask your contractor to redo.