What can a hobbyist do on UNO Q that I cant do on other Arduinos

Yes.

The Q takes some getting used to but most problems are fixed.
This was my breakthrough problem with the Arduino Q.

Arduino Q classification

Basically it made me realise how to wire up the hardware interface for a network solution. It is not what I thought it was.

I haven't got all applications to work successfully yet, but I can see where I am going wrong with some. This mainly covers the cloud which I have never used before.