Yes, every transaction is on the blockchain so it is traceable. Blockchain Explorer is a good way to look at it https://www.blockchain.com/explorer/blocks/btc/864544

And yes, it’s only traceable if someone knows the wallet owner. There are forensic accountants who can figure out who owns the wallet even if it’s nokyc. They can trace things like spending habits on the wallet, addresses, and if the government is involved the physical hardware.