Re: Upon rereading the article...
"For the record, The Git has done as much several times in his life. He is after all (rumoured to be) human..."
And you have done it again here, mate.
The reality is that critical infrastructure cannot rely only on grid power. That would be totally irresponsible. Hospitals et al have backup power precisely because they are more important than icecream*
Uhlmann blew what credibility he ever had by being the first out of the blocks to blame it all on wind farms and then getting huffy on twitter when called out for it
* Flinders Hospital lost a bunch of frozen stuff 'cause their backup genny fell over with a dodgy fuel pump. Or maybe the mouse escaped from the wheel, I forget.