Wild amount of confidently incorrect here.

For starters, what you describe tracks other electronic devices. That’s neat, but this new stuff is tracking bodies of interference. Meat bags. The fixed antennas and beam forming have given stereoscopic vision to interference identification on Wi-Fi routers. Before, it just saw an SNR spike between the router and TV, but it couldn’t tell if it was a cat up on the counter or a crowd in your living room. Now it can. Now it’s able to tell when something the size of a human walks past your ring camera without having any access to that camera.