He may still be in the league. The argument here isn't if people can make it to the NBA from teams not named Duke, North Carolina, Kentucky, etc. But the argument is that Frank chose Duke because he believed Coach K would be the best mentor for him to be Nba ready after a couple of years.
If you had an internship at a good accounting firm, or one of the best accounting firms in the nation, which one would you want to go to to gain knowledge and experience?
Now, the argument of franks social life and finding a wife to marry that's LDS is a completely different argument. I'm sure it's tough to be one of the only LDS kids in the schoool, but I'm sure he will be fine. He's a good kid.