Could agree more Mark
If you were to create list of people in the UK who really understand metal supply and demand, have built mines, know commodity economics, large scale industrial investment, project feasibility, permitting, development and finance: then it would not be a long list, but my name would be on it.
For all of the people who know that electricity is the future and that hydrocarbons are dying, that we don't need diesel, or gas, or liquid fuels:
Tell me where the copper is coming from.
Now do silver, tin, lithium and batteries.
For those of you say the future is nuclear, tell me where the uranium is coming from.
Tell me what price these would be at, and when it could be delivered.
Tell me how you are going to build grid resilience and more importantly grid inertia from renewables.
Tell me what your plan is for windless, cloudy days in the middle of winter.
Tell me what you will do to decommission and replace wind and solar every 10 to 20 years - and where you will dump all those unrecylcable turbine blades.
For every GW of renewables we have to build a GW of conventional back-up, or rely on the kindness of foreigners.
There is no magic metal shop.
There is no new physics that makes a 100% renewables grid work.
The greatest threat to humanity is not global warming, it is energy poverty.