Congratulations to him on becoming a QB finalist, that’s a great achievement and if he doesn’t match, it will likely be somewhat of a hook in RD at QB partner schools.
I can’t chance him for matching, but his chances are higher if he is URM and EFC is zero.
If he doesn’t match on Dec 1, make sure he is ready for his next steps. Some QB schools will let him still roll his app into the ED/ED1 pool, even tho the deadline has passed (of course he can only ED to one school). He will also be able to roll his QB app to EA and ED2 at some partner schools, and of course to RD. Typically, another 2,000 or so finalists are accepted to QB partner schools in these other rounds.
I hope that it works out, and also that he has at least one affordable safety. Good luck to him.