Long term problem for Bitcoin and blockchain

I wondered over the weekend whether the development of quantum computing was going to be a problem in the long term for Bitcoin, and the answer seems to be "yes".   See this recent article at MIT Technology Review, but there are others.  (They do suggest that changes can be made to make it "resistant" to quantum computing, but I wonder if quantum computing is going to win the race in the long run.  Which would make all the energy being used on current mining a true waste.)

Speaking of Bitcoin and blockchain, I noticed this amusing tweet on the weekend: