I recently traded in my iPad Air 4, which I used with the Smart Keyboard, for an iPad Mini. I also have a MacBook Air, and just felt having two similarly-sized devices was redundant. The Mini is very nice, and I've been doing virtually all my writing on the MacBook anyway.
Good article, though I admit I got a little lost between all the Pros and Airs and iPads you were going back and forth on. Finding the right setup can be hard!