It's not fully anonymous even WITH crypto. They have call centers. Banning crypto won't make ransomware go away, it will just increase the cost of ransom.
That must be why ransomware demands were so much higher in the pre-bitcoin era. Unless you're including the cost of sending a cargo jet full of cash or gold halfway around the world?
There is a reason ransom amounts skyrocketed when cryptocurrency entered the picture, and no, it's not because it was "the early days" pre-bitcoin.