Maybe a bit, but fortunately it is on the outlet and not the inlet so the pump won't get thirsty. Eyeballing the angle, if the D5 is back as far as it can go the bend looks pretty reasonable to me. Also, once you get some tubing on those plastic barbs it is loathe to go anywhere. I would just say that a worm drive on that particular fitting would be a very good idea for the sake of redundancy. You don't want a leak anywhere in your system, but you REALLY don't want the tubing to pop off your pump outlet, especially with hard disks mounted inches above.