Yeah, there's something wrong with those stickers.
1. Those are a single sheet rather than jigsaw piece stickers. Those outer borders are just too straight and uniform. No breaks or juts or anything like that.
2. That picture makes it easier to tell, but it looks like those stickers are on the outside of those windows.
3. The leftmost sticker sheet is perfectly cut to the curve of the window (top right area). If they were inside, there would be some distortion because part of the sheet would be outside the window and on the van interior.
4. In fact, the cut is so perfectly aligned, it could be mistaken as a photoshop.
5. Those sticker sheets seem to have been put on the van very recently, maybe a week tops. No fraying or corner rolling, or dirt of any kind. These things are all pristine.