I got my Culinary Degree (after my Information Systems degree) and never made the career change. Depending on what level of chef you want to work as, it could take years before he makes it up the ladder. And the pay for entry level work to work your way up is terrible. That's why I haven't made any move into that career field yet. Of course, if he's going to do it part time at first while he works another job full time, that would work well.
Everyone wants experience!
IMO, unless he ever wants to actually do restaurant management, I don't think he'll be any better off with a program that includes it. A good culinary program will include enough of those types of classes that he will understand how it works without necessarily having the "restaurant management" be a core part of the program.
I wish him luck in whatever he chooses! I absolutely loved my time in culinary school.
Kimya