That is a very nice notice.

Commenting on what you said (and totally agreed) I am coming with an argue and say that even if it is controlled somehow it is still decentralized. People can slowly start mining with renewable energy or somehow. And they will.
A hardfork is a solution to keep going also..
Also an easier way to control would be probably to shutdown internet...

To finalize my thoughts and all that you correctly said lets take it a step further and think that all this electricity is being provided by non renewable power... Petrol? Gas? Does this has anything to do... with... war? hmm.. but bitcoin is here to help people in need.. to liberate economies...
It's like bombing to kill and then give your hand to heal..