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LG TVs and monitors said to surveil users and install bloatware without asking
(www.notebookcheck.net)
This is a most excellent place for technology news and articles.
They still access and provide a route through your wifi.
What? How would they do that if they are never connected to WiFi in the first place?
They still talk and connect if you want them to or not. The "permissions" is mostly for the apps to talk back and forth. It is still usable by anyone who knows how.
Smart TVs do not magically connect to your WiFi without credentials.
Now if there is an open WiFi available, that might be a way or if the TV has a deal with a carrier to use all that open automatic WiFi.