Did your TV connect to the fridge, or did your neighbor connect their fridge to your TV? Without some evidence I would be far more inclined to believe that a neighbor did something dumb (I've seen multiple of my neighbors try to connect to my offline TV via bluetooth) than that TVs connecting to fridges are slipping under the radar of tech journalists in the era when scrutiny has led to negative press for LG. Either way it's dumb that that network connection is possible, and concerning it could be possible without your consent, but it's also not nearly as bad.