Really guys? That is very nice forehand technique. Definitely looks like the tool of a strong 4.5 player. We don't know what the rest of the game looks like, but if he has sound mental/tactical game, the serve and BH would have to be a long ways behind for him to drop below a 4.5.
I don't know what the goal of the video is, but it certainly doesn't throw a red flag against a claim of 4.5.
I think it's a good forehand. Great racket speed and racket path. Footwork and loading and balance are very nice also. Even a few reverse forehands to deal with the quickness of the multipurpose surface.