The thing is it still impacts the other Wifi Channels and Networks (or at least those on the same band, guessing mist IoT uses 2.4GHz) even tho other Channels are used.
But, i see the appeal, since most smart home devices you can get cheap are Wifi connected. Hope that changes with the ESP32-H2 and -C6. Those are relatively recently released.
Wifi is just such a heavy proticol for just sending sensor data and some commands around, imho.