Hmmmm.... I can understand why you're upset, but he's not actually named you, which makes it all really difficult. The lawyers can advise further on that front if you choose to go that route.
But to me, as a bystander with no axe to grind, it reads as an ego having a sounding off about how clever he is, and you're the innocent 'collateral damage' in his wild shooting spree. He wasn't aiming at you, but you still got hit.
Not unusual for hacks wanting to make a story for their column. If they didn't have egos, they wouldn't be writing columns.
I think you can make a good opportunity out of this. Having protested to the editor, and I think you should also protest to the columnist, you have the chance to educate the writer about the wood business. Make sure he understands all the costs and effort you go to. Make sure he knows how long you stack your wood to season after sawing and chopping before delivering it. Make sure he realises you don't just cut it up from large logs (which can stand for 5 years and still not be seasoned!) the morning before you deliver it. Make sure he understands all the things you do to meet his needs as your customer, and those of all your other customers. Offer him some references to happy customers that he can use.
Then suggest he writes another article about why a diligent local woodcutter is a blessing for the community, about how hard you work for your customers, and about how you are great value for money compared to a big national who will just deliver a big bag of very expensive logs via Palletline.
If he's half the hack he thinks he is, he'd be happy to work with you to set the story straight. And the editor will be very happy to give you a LOT of free advertising space for some time to come ;-)
After all, if one of you loses a battle over this, even the victor hasn't really gained anything. Whereas a win-win could be great for everyone - including the most important people in this, your customers.