that's definitely a possibility, especially if it's just the one window
Hard to say 100% without the vehicle in front of me to see it but it sure looks like the glass is scratched. What kind of car is it? Is it new or a demo/used?
With the number of them and the direction they're running I'd hazard a guess that the installer prepped the glass with a razor blade and the blade scratched it. Unfortunate but it does happen, especially with some of the softer glass we see on cars today, if that's the case and they're responsible than hopefully they'll do the right thing and take care of it.
Somone definitely used a razor blade, now was that the tint installer or done before the tint job, who knows. Personally, it seems odd that the tinter was able to tint all the windows with no issue but have an issue there which leads me to believe the tinter did not do it. It is easy to have existing scratches on your glass and not notice them until you tint the windows...the black background makes them stand out. Brand new vehicles from the dealership always have scratches, flaws, etc. Prior to you buying it, it was handled by multiple people from the manufacturing to getting it to the dealership...more hands involved, more chance of damage. This is why when people get Paint Protection on a brand new car, they have to do paint correction first to ensure the paint is in top-notch shape prior to getting wrapped. Once again, have no idea if the tinter did it or not...like said above, may be used a blade on that window to remove a sticker.
