This is the entire point of the article - that inadequate testing can lead to inaccurate results. The point isn't that "the device is biased and therefore its

This is the entire point of the article - that inadequate testing can lead to inaccurate results. The point isn't that "the device is biased and therefore its makers are bad people", it's to highlight a clear-cut case where cutting costs by doing such limited testing leads to negative outcomes.