The WiFi system really does work. I personally have been using eero for about 6 months, with no dead spots in my home. I really like how you control your whole wireless network through the eero app in your cell phone.
With TrueMesh, WiFi hops between eeros to travel down hallways or go around walls. Most other WiFi systems only allow for one hop in any direction — so something as simple as a wall can mean that your devices can’t get the WiFi they need. eero allows for more hops with less speed degradation — so you can cover any home and navigate around any obstacle.