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It's not thread-based matter to the vacuum directly, but matter over wifi using their Hub 2 as a bridge, but I just tested and it works! The vacuum shows up as a binary OnOff plug, toggling it on starts a cleaning session, and off cancels the session and returns the unit to base.
I should note, I had to update my Hub 2 firmware to V2.0-1.2, which also adds the ability to swap out the temperature and humidity sensors to other devices for being a matter bridge, which is nice.
I have a Hub 2 but firmware is 1.5. How did you get 2.0 on yours?
For me, it didn't prompt the upgrade when I went to the firmware page, but it did prompt for it when I went into the matter settings page.
I think Switchbot does slow rollouts, but if it's not available for you yet you can just send them a message in the feedback page of the app and they'll probably be able push the upgrade to you (I've done this a couple of times for previous matter releases).