My ER706W exposes a hidden WiFi network, 5GHz range while in standalone mode.

TP-Link explanation says 'The hidden wireless network is used to build up the mesh wireless network system', although this directly contradicts the fact that a router configured as a standalone router has no mesh functionality.

It sounds like “we manufactured a second key to your door for your wife, but we're not going to give it away knowing you're single”.

Is there any way to disable this hidden network for this specific router? I can't find any details about the default password randomization it uses, so I'm afraid this could be used as a backdoor.

P.S. I presonally enjoyed 'It cannot be detected by the common wireless devices.'. My smartphone sees it, my MacBook does - how rare/uncommon are these devices?