Our device is on OpenWrt (like most routers), but the key here is that it is for people who are not technical, do not want to/or know how to throw OpenWrt on a RPi and integrate a bunch of things.
That being said - we started with OpenWrt on a Pi hahah! But quickly started having issues with the wifi hat and the network over USB function.
Where would you say your level of network/technical skills are when it comes to your home network tapper out of interest? (I am presuming you are not an average home smart device user)