I wish them luck as having better wifi in the home is nice, but I suspect that the limiting factor has been the price rather than the lack of technology. One could get a Ubiquiti UniFi AC Lite device for half the price of an Eero.
By "hub" do you mean their managed switches, their wireless access points, their routers, or their long-range outdoor point-to-point wireless radios?
I own three indoor Wifi APs and have had good service from them. I also own one of their three-port routers.
About ten or so months after I purchased the router, I would get spontaneous reboots that became increasingly more frequent over time. It turned out that the external power supply that shipped with the thing had become unreliable. I replaced the power supply with another suitable one that I had lying around and I've had no troubles in the year+ since then.