Gold, silver and cash have proven for centuries that no-KYC currency can and does work.
Discussion
Not really no. Try to buy it. Or sell it. Or use it. Or store it. Or transfer it. Or borrow against it.
Theoretically, no-KYC assets like gold exist — but in practice, trust acts as a form of soft KYC.
You don’t need KYC to own gold. But to sell it, people need to trust its authenticity and origin. That’s why even ancient gold coins needed a mint mark — people didn’t just accept anonymous lumps of metal.