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No one knows if this was truly a defective battery before overheating.

The way I read it: CPU gets hot, battery damage from overheating begins, computer shuts off. User turns it on again not knowing the state of the electronics inside. Possibly weakened or damaged electronics cause the battery to blow up.

Bad ventilation weakens electronics and continued use causes catastrophic failure. This is not new.

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It is highly unlikely that thermal runaway was caused by the computer overheating.

It's far more likely that a defect in the battery caused this. Perhaps the laptop tried to draw too much power from the battery, and it failed.

The electronics shouldn't allow the computer to be turned back on if it's too hot. If they did, it's the fault of the electronics, not the user.

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