Okay I see. Well, wifi might be easier, especially when you can easily have some MQTT interface working, but still I wanted to see if zigbee was an option.
For one, every connected device in a wireless network leads to less bandwith on the network. Then, if wireless lan is used, the device is already within my LAN, which it is not if another network type is used (security considerations). Next whatever you build using wifi will most likely need more work on the server side (home assistant), while a compliant zigbee device should just work (at least in theory, or better, in my head).
But while I am a developer and have fun when building stuff, I probably won’t go that route if it won’t be worth the increased efforts, or there is no good support for developers regarding zigbee.