So, from the looks of it, not everyone has thought a lot about the effects of having loose aluminum or steel dust inside their case, how to remove it, how to be relatively certain that the risk has been mitigated, or simply how to prevent its accumulation in the first place.

We'll never know how many RMAs result from mishandling, improper installation, environmental hazards (eg. metal dust, humidity, ventilation/cooling, etc.), faulty components, or manufacturer assembly defects.

... would love to see the pie chart, though!