> How? If that were true, WiFi range extenders would violate TOS as well.

A WiFi extender just repeats the same network with same security, SSID and access password. It doesn't extend connection to third parties.

Similarly, if I have a large property with a large land, I can spread the network to every part of the land with the equipment of my choosing and no one would say anything unless I allow third parties unfettered permanent access to said network.

WiFi range extenders usually implies same home and same family members and not the house down the hill so neighbors don’t need to pay their own. It’s a bit absurd though since that house wouldn’t be able to pay their own in this case.