Having looked a little more at the areas the alternative SAGE (Parsley?) will be looking at, one will be tracking applications. I think we can make a clear scientific and political distinction there.

Apple, Google, and the EU all favour a decentralised database mechanism: no body has access to all the data. The UK government favours a centralised one, where it has access to all the data (and the potential market value of that is high), but they promise they will not take advantage of that.

Technically, both approaches work. So on scientific grounds, they are virtually equivalent. Politically they are very different.

So I would expect the alternative SAGE to be examining how to make it work, what the effects of a 50/60/70/80 percent take up is and so forth. I would not expect them to be focusing on the centralised-decentralised question except in so far as it affects take-up.