There are some videos on YouTube of how these windshields are made. The entire piece of plastic gets heated and molded around a plug. The area of concern in the OP is an area where it would have to get stretched and conformed the most. It looks like a wrinkle was left. This would strike me as a manufacturing defect and not an installation error.
I realize most of the posters here are flawless mechanics. I have no trouble imagining these defects being hard to pick up on prior to the windshield and being installed. If I was installing it, I would not remove any protective film until absolutely necessary.
Did you purchase this windshield on your own and ask the shop to install it? If so, I think this is between you and the manufacture.