Comment by vbuterin

1. Has an actual path to adoption (because people have keys and have a motivation to try hard to retain their keys because they have crypto assets)

2. Once smart contract wallets properly gain adoption, you'll be able to do recovery (see: https://vitalik.ca/general/2021/01/11/recovery.html )

3. Lots of built-in anti-sybil techniques (eg. verifying that the address has nonzero balance is a pretty simple and effective one)