This is standard. Every car I've owned in the last 10 years has done this. What he's referring to is the fact that the drivers side blade does not make contact with the window pillar thus completely cleaning the entire surface of the glass. The blade usually stops about 1" or so from the edge of the glass, leaving that unsightly gap of dirty window where wiper fluid accumulates.
I mention the last 10 years because I feel certain all my older cars always cleaned near 100% of the surface area of the glass on the drivers side. I feel like I remember the first modern car I bought that didnt do this and I thought it was odd, like some sort of design flaw. Then I noticed every new car after that did the same thing, regardless of make/model. It's as if the industry just came out with a new way to wipe windows that results in an area that never gets touched.
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