Orbi WiFi SSID now always on?

Thanks to those that replied.  Much appreciated.  To clarify: hiding the main WiFi in my case was merely a cosmetic issue... I accept the security clarifications  but they do not apply here.  I just wanted to have one WiFi advertised to my visitors.  Other devices at home did not need to see the main network SSID because they were always connected.  So my question is more of a disappointment with Netgear that removed that option arbitrarily,

without informing users why.  I hope they read this forum and can restore this functionality in the next revision.