This is a weak argument. A better one is that the saw stop doesn't work for conductive materials including wet or pressure treated wood. For this reason they pr

This is a weak argument. A better one is that the saw stop doesn't work for conductive materials including wet or pressure treated wood. For this reason they provide a bypass which turns the stop off. You can imagine how this plays out in a production environment where it's accidentally tripped a few times (hint: workers learn quickly about the bypass).