Speaking as someone who works with (read: designs) this sort of technology, the only question I've got is: for the love of <insert deity of choice>, Why???
I do not eat my own dog food when it comes to this - perhaps because I have a better idea what's in it than your average punter who can't see past the "Oooh, shiny!" aspect. Look at that google gizmo which was sending all conversations around it back to the mothership - a faulty touch surface, they said. No, they got caught with their hand in the cookie jar - just like the smart TV snooping scandal not too long ago. It'll keep happening, just another "accidental" breach...
In my house, the lights are operated by little plastic squares mounted on the walls about four feet from the floor. Most have little plastic rockers on them, one or two have little knobs that can be twiddled. I like this system. Push the rocker or twiddle the knob and the lights do what you want them to do, no delay, no repetition, no misinterpretation, no fuss. In addition, they require no infrastructure and no operating power supply. They are secure.
For most domestic use cases, these lighting technologies are about as much real use as the internet connected kettle which can... boil water. Sure, there are edge cases such as disabled people, but for most of us, just how hard is it to flip a light switch? Is it really worth the price of the products, the infrastructure, the excess energy use and the faff of securing it all? What happens when the infrastructure fails or the company that made the stuff goes bust?
Don't get me wrong here, I'm a huge fan of technology - when it has a clear use case. This stuff screams "gimmick" to me.