And what realworld good will turning off ESSID BC do?
None, zip, zero against a person who know what they are doing.
True. But it is good foundational practice. Do you not agree?
All of the things you can do to secure a wireless network generally add up. Sure, no SSID won't stop l33t h4x0r , but 1) it's one more thing he has to deal with and 2) it stops the wannabes.