Actually, You can see how well they cut it in. Look at the photos. The jams are still white, but I don't see any stank vinyl hanging off the side and it is laid into the sail lines with no air bubbles. Badass. Plus, ride around like that for a year and pull that Vinyl off and voilah....brand new paint. No fade, no chips, no nothing. I love it. Looks cool and actually helps the value of the car in the long run.
I see nothing wrong with it. Now if he painted it......then i'd say dumbass.