You're confused, snap.
We have gone from only having a cable router, no modem, to now Cisco Router Modem with enabled Wifi.
This constitutes your network has WiFi capability, regardless if you use it or not, others could try to connect to that WiFi.
For instance, if I haven't currently connected to my WiFi, I will be shown a list of available WiFi connections, these are all pretty much neighbours WiFi network connections (see attached image1). So it isn't a case of you don't use it, but that you have it, so it has to be secured. You would see this if you ever tried to connect to your network wirelessly.
So they could try to connect to mine, but would find a password required because of my network settings, so that is blocked. If for whatever reason something did get through (or I didn't have WPA2 and password required) it would be subject to the WiFi Inspector scan.
Personally I don't feel that you need the "Rescan Home Networks Automatically: Enabled" option. As in you are the only one using that so you don't want to constantly scan it
if you have your network buttoned up, set up as Private and with strong WPA2 security and access requiring a password to access the network from outside your personal private network. Then you are much less vulnerable, but you are getting a warning of someone 'trying' to gain access.
One of the major differences being my windows network settings relate to windows 10 and not Win7, so there will be some differences. image 2
What also confuses me is this:
Network 3: Public Network
Network: Public Network
Local Area Connection: Public Network
Win 7 Network Info Shows:
Network 2 Home Network with Local Area Connection
Public can mean anyone can access it, but some firewalls have more strict rules for Public access and less strict for your Private network. This is certainly the case for the Avast Firewall (which I don't use).