Sir Isaac Newton made some observations about falling objects and developed a few basic equations to describe the motion of bodies. It took some time for people to accept his equations. Then Einstein came along and showed that Newton’s equations were not entirely accurate. Still, the observations never changed.
Many of us have experienced and observed that audiophile grade ethernet switches improve the sound of streaming music. I have even observed it dramatically improve the picture quality on my TV while streaming. Therefore, it is an exercise in futility to insist that an ethernet switch can do nothing. Try to be more like Einstein.