https://www.home-assistant.io/integrations/matter/
Adding a device now requires a whole song & dance with bluetooth, a mobile phone and god knows what else.
Meanwhile zigbee is:
1. Buy a zigbee stick, there are dozens, they all work great
2. Press the permit join button in home assistant
3. Press a button on the device for 10 seconds or 3 times or whatever
4. You're done and it works!
Oh, and for some reason https://www.home-assistant.io/integrations/matter/#experimen... involves google cloud in the process of me testing a device I created locally on my own network
The final nail in the coffin is:
> It is recommended to run the Matter add-on on Home Assistant OS. This is currently the only supported option. Other installation types are without support and at your own risk.
So I can't even officially use this stuff without uprooting my entire operating system.