Which is exactly why Dave Ramsey is so dangerous, in my opinion. Debt is neither inherently good nor bad. It is a tool, only, and like any tool it can be used for good things or bad. Most specifically, debt is a lever (which is where the term leverage comes from when it comes to finance) that can make things possible, but a person needs to know whether the thing they are leveraging is positive or negative. To not understand that, in my opinion, is deeply dangerous and creates a completely one-sided understanding of personal finance.
OP, no book out there is going to tell your son to run out and put a bunch of junk on a credit card, to buy a car he cannot afford, etc., but again in my opinion (and in the opinion of most people in the financial industries) there is a lot more to finance than creating a fear of debt.