The discussion revolves around the feasibility of using PCB material to create strain gauges, particularly for DIY applications where precision is critical. Comments highlight the potential issues with using PCB, such as sensitivity to changes in temperature and humidity which could affect measurement consistency. Traditional strain gauges, which employ materials designed to mitigate these variations like constantan on polyimide film, are suggested as more reliable alternatives, especially for applications requiring high repeatability. The conversation also touches on the need for calibration before each use to ensure accuracy, which could suit hobbyists who don't need absolute measurements but aim for relative consistency.