Jonathan has a Philips Hue lights and uses the Wiz App to control them. But they keep disconnecting. Leo says that's a common problem, and he says that using the Home Hub will make WiFi connection to the lights more consistent. But Leo also thinks that the smart lights are more of a gimmick these days and really more hassle than they are worth. And they are expensive too.
In general, smart home IoT as a technology still has a long way to go.