Redis ACL：default user does not have permission to execute the psync command？

The comment in redis.conf(redis7.0.15) says that the default user does not have permission to execute the psync command, but it does.

# However this is not enough if you are using Redis ACLs (for Redis version # 6 or greater), and the default user is not capable of running the PSYNC # command and/or other commands needed for replication. In this case it's # better to configure a special user to use with replication, and specify the # masteruser configuration as such:

# masteruser \<username> # # When masteruser is specified, the replica will authenticate against its # master using the new AUTH form: AUTH .