I think it’s part of the Origin Story.

Bitcoin was created by Satoshi Nakamoto almost 20 years ago. There are a number of wallets that people believe belong to Satoshi (have they proven they belong to SN?)

Yet the identification of Satoshi has eluded a global hunt to identify him. Maybe law enforcement has not been involved, but the mystery definitely suggests that BitCoin can help mask identity.

The wallets attributed to Satoshi have not seen any coin movement so it only shows that one can publish code pseudonymously, not that one can use BTC anonymously.