Hi There,
I didnāt think so (you would have any trouble) that being said, Everyone needs to be up to speed on this even the Seeedineers. Itās early, SO the secret to the SSED (Synchronized Sleepy End Device) low power 
for matter over thread and is further down my own list. 
Perhaps others can chime in. Iāll be posting more BLE related stuff but more is planned by Seeed support to update the WIki with such Step-by-step guides. 
I would suggest STRONGLY anyone looking to get the complete Dose, start with this and eat it all. I canāt and wouldnāt want to try and duplicate the quality info and help that already exists. How it applies to Seeed and the New XIAO is too early they are working on it actively with Nordic. So hang tight and Get up to speed folks with all the free material Nordic is providing , they are updating Weekly almost.
Once you feel your way around the SDK it starts to make sense and works well.
If you can get a DK board then Itās a great place to start.
re: Anyone " trying to get more āadvancedā applications working, viz Matter over Thread " should be able to Understand, Build and work with the examples successfully first IMO. Then moving to the New Xiao after would be better understood. I donāt think itās ready yet so keep that in mind. 
Yea, itās not your fatherās IDE these days. Someone asked me if I was High the other day,
I said NO., just started reading the WiKi & Nordics Nrf54L15 technical referencesā¦Fazoul Stay Tuned.
HTH
GL 
PJ 
Good stuff , but this Matter tool is cool 
Online Power Profiler for Matter over Thread