You're completely wrong. Signal processing is regularly used to make life and death decisions in medical technology, including audio techniques which are particularly useful in say, heart beat analysis. Your perspective appears rather narrow. In any case, I said egregious "signal processing cock up", which from a purely signal processing perspective, it absolutely is (as in, it has a big impact).

It might well be the case that a bug in a bass audio driver is not that big a deal, but these sorts of bugs are easy to avoid and shouldn't happen. It does indicate something about the quality of the engineering.