I have been using Silicon Labs MCUs for a while: everything works as expected, the SDK is very clean and well documented Xiao would bring the compact form-factor and affordability to the Matter standard.
We can dream… LOL
I see the matter running on a Nrf52840 already.
There’s a Youtube demo “techsms” successfully built and demonstrated.
I would like some wifi on the Nrf5X series if I’m pontificating on it… LORA would be good too.
In arduino though would be a stretch, they barely make the IDE work, no Debugging working in general on all BSP’s They should fix that and other USER interface stuff. IMO.