The Jetson Nano is fantastic, and I use Tensorflow on it with two home security cameras. It is a wonderful device, and deserves far more attention than it gets.
I'm going to upgrade in the next week to a Jetson Xavier NX. Not because I need to, but because I like playing around and it's a silly powerful device.
I also run a NextDNS CLI client on it, various automation stuff, etc.
Jetson nano can run Cuda code. It is pretty decent.
The article does employ a reasonable definition of edge computing IMO (scientist who works in this area). The rpi is the client, and the processing happens on a beefy edge node. But yeah .. there is not one clear, accepted definition here.
I wonder what the performance would be on a $100 jetson nano.