Uh no, according to your own source they died because of tread separation caused by a number of factors, one of which may have been underinflation. But in this example the 'underinflated' value was manufacturer recommended, so a TPMS wouldn't have helped anyways.

300 deaths seems like a very insignificant figure to be worked up over.

Seriously. Ten times that number die in traffic accidents in the US daily.

If that's your level of risk sensitivity, don't get in a car.

What? About 100 people die from road vehicles per day in the US, not 3000.

Ah sorry, that's the global statistic, not the US statistic.

Still, both statistics illustrate the point - 300 deaths a few decades ago involving faulty tires that may have been exacerbated by manufacturer-recommended underinflation have basically 0 bearing on the marginal risk of driving with a TPMS warning light illuminated.