I guess I can’t fault the author for the omission, but I wish it had mentioned my daily driver.
I use the Model 100 from Keyboardio. I have two. https://shop.keyboard.io/products/model-100
When I travel I use either their version of the Atreus https://shop.keyboard.io/products/keyboardio-atreus or their version of the Preonic, which I think was only a crowdfunded model.
Keyboardio is run by a programmer who developed debilitating RSI and his wife. He tried a bunch of keyboards, then designed his own. Lots of people asked where to get one, so they refined it into a product and started the company. That was the Model 01, and I have two of those.
Having the function button located for the base of the thumb is really comfortable and useful. The swappable bases (flat linked, tented, and the separate stands) are nice to have. The link between the two halves of the models 01 and 100 uses an Ethernet cable. The stands use a standard camera tripod threaded connector, so building your own mount for a chair or armature is simple enough.
I had a warranty issue with one of my Model 01 boards. One keyswitch didn’t work reliably. Instead of sending the whole thing back, Jesse sent me four or five spare switches, some stickers, a personal note, and a page explaining I could desolder and solder the switch without voiding the warranty (as long as I didn’t damage anything in the process of course). The Model 100 is socketed.
The hardware design and the firmware are open source.