What people do not have though is infinite 2.4ghz channels. I have around 500 zigbee devices over two networks, 2.4ghz wifi and I had to manually split the bandwidth to make it stable. Adding yet another network would probably be too much. I doubt I am the only person with a busy 2.4ghz range.

Bought he new Ikea movement detector, didn't see that it wasn't ZigBee anymore. Didn't have any of those devices so had to buy another USB dongle for my home assistant NUV.