This doesn't make sense. Just because there are examples of components built from high quality parts that are "inaccurate at best" certainly doesn't mean that all components built using high quality result in inaccurate performance. Indeed, the use of high quality parts often does result in improved performance.
I never made the assertion that ALL components built with high quality parts resulted in inaccurate performance, as you can see clearly in the quote you excerpted from my post and apparently concede with your use of "some".