I thought so...until I looked closely.
There are duplicates of stars scattered at various points in the photo. If this was a fault of his stacking software, the misalignment would be apparent throughout, I would think.
Something has adulterated this pic, I'm just not sure what.
Maybe a composite of several elements photoshopped into one pic?
Maybe it's just my video card as I'm sure NASA confirmed the photo's veracity before publishing it.
It is a composite of twelve photos.