Don't know if this will be an issue, or if his drop was just unlucky. But Face ID not working after a drop, when the exterior still held up, might be an issue Apple has to deal with. You iPhone X owners should be extra careful.
What do you expect when you toss electronics on concrete over and over and over exactly?
It took QUITE a few big drops to do that, and the glass didnt even shatter. Id call that impressive.