I tend to agree with him. We've been burning wood for a bit over 10 years now. We do not save any money if I put a value on my time and a value on the wood that I burn. I ran the numbers several times.
Cost of stove, chimney, installation, saws, chains, splitter, fuel, etc.
Value of my time splitting wood VS taking a part time paying job.
Value of the wood I produce if I sold it.
I'd never break even, let alone save any money.
However, I enjoy the process and it gets me outside. I also enjoy the warmth of the fire. I get free wood off of our property and I get a lot of wind fall on our trails. I have to clear locust from our forest, and I might as well use it.