"If you can go find someone better, then do it."
No offense, but duh-doi.
Hall is not the best PG in America. Fouss is not the best center in America. Jaxson is not the best wing, etc. We can upgrade at every position, and of course there are better players in the world. The problem is getting them to BYU.
In the meantime, Hall is a pretty awesome PG. And he definitely makes everyone around him better. Will a PG who is better than Hall enter the portal? I doubt it, but maybe. Will BYU be able to get that mythical elite PG transfer? Probably not.