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This would be a violation of the Magnuson-Moss Warranty act of 1975 which requires they show the work done directly caused the failure.

If this were a widespread policy I bet class action lawyers would be all over it without you having to pay for it.

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Maybe they researched customers’ backgrounds and only screwed the ones they thought wouldn’t lawyer up
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This doesn't require research. Just reject by default and concede if a lawyer shows up. It doesn't cost any money to have a default denial policy and saves millions.
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