> I figure two could just be quality of installation
I think it's more about using the places where the sun shines the most (look at the third before/after photo in that page). Tesla roofs on the other side will have non-solar shingles that look exactly the same.
One and three I can see, I figure two could just be quality of installation - other types of shingles could be installed mis-aligned too.
Beauty is in the eye of the beholder, it's true. It might not jump out at me, but that is indeed just me.