That article seems to make it seem like any coaxial cable can pass very high frequencies so I guess like with anything else, there is still better quality copper that delivers the signal better but basically it just make the 99.99% become 99.999 and keeps adding 9's to it. For the return path being the outside shield, how are they actually preventing that signal from going past the connector since if you put a splitter for example, wouldn't it basically be on the entire outer surface of the splitter.