Call me cynical but...
Is the app to control the lights going to be supported beyond the next 12 months?
How long does your phone to control them last?
Can you remember the password to login to the App?
When the wifi/mesh/BT/Zigbee/ZWave standard is changed, are they upgradable?
Will these IoT devices send your lighting habits back to MicroGoogAzon?
(Remember also that speakers can be used in reverse as a microphone)

The 'Ol Mk1 finger is still good for flicking a switch after many many years

(Sorry... yet another long day of Fuffing with "technology" today)