Earlier quoted context omitted.
I won't downplay the environmental consequences of PoW, but the actual reason so many governments are speeding the push against crypto might be related to a future of high inflation and high gov debt. It would be the perfect storm for mainstream crypto adoption.
I sincerely think the main motivation is to protect people from losing too much when the bubble pops.
This thing also poses a real threat to SWIFT and anyone trying to put together a successor to SWIFT. The US has been weaponising international currency transfers for a while now, and China would be facing problems controlling capital flows if people could just send money internationally without much consequence. There are good, selfish, reasons for why governments would intervene.