Now, I am not talking credit card debt, living outside of your means etc, but why is the Dave Ramsay approach so popular here? Does it align with an LDS principle?

There are many avenues to creating wealth and being financially stable. Pinching every penny to avoid debt seems miserable to me when I can responsibly borrow for a car, home, investmemt properties, etc, while still keeping cash/liquidity on hand.

To each their own, but curious none the less.