It always looked to me like the only people that might be making a living at it were getting paid to talk about it, whether in print, or class. I'm sure there are a few, but the chances of getting established, and ending up making a good living (not just getting by) are pretty slim. I've seen some do well for a short while, but then things change.
I've built stuff for a living since 1974, but not for other people. Woodworking is on the list of stuff I do, but without stonework, brickwork, plaster, carpentry, cabinetry, custom roofing, plumbing, electrical, and other stuff that needs to be done, like cutting grass, I would have to do something else for a living. I get paid the same thing for any of that, with the only thing different being finding leaks, and fixing leaking roofs. I get double my normal rate for that, because I don't want to do it. If you pay me enough, and can't find anyone else to do it, I will, but don't complain when you get the bill.
If I only did woodworking, I couldn't even think about paying the property tax on the Ponderosa, much less supporting, and raising a family in addition. At my age, I could quit working if I wanted to, but am fortunate to still have good health, and mobility, so I'd rather be making money, than sitting down, or piddling time away.