Here are LG's contract terms for appliances.[1] They are awful. Not only can they listen in. You have a contractual requirement to tell everyone in range of an appliance that they may be eavesdropped upon. CONSENT REQUIREMENT: You acknowledge and agree that it is your sole responsibility to obtain all necessary consents from any third parties whose voices may be captured by the Product and to notify household members…
IANAL but without concent I think LG is comitting a crime here. The owner who ostensibly agreed to obtain concent through the ToS might be breaking their agreement, but wouldn't that be a separate issue? ToS and other click licenses have been making shit up for way too long.
Perhaps we start suing one another for not disclosing the wire tapping, forcing the lawsuit upwards towards LG. It'd be more efficient to sue LG, but lawyers don't seem to be done those things. At least not that I'm aware of