I refer anybody disagreeing with me to Barry’s detailed post above. Chris, yes it’s not a folly for the designer but it is for the consumer who has no control over such design aspects. The measurements on DIY audio where done by an established RF engineer along with the TDR results. Also, there was something about the canare plugs having to use the matching RCA socket to meet 75ohm but if that is really necessary then you may as well use the cheaper and proven BNC connectors instead.
Listening in a Foo free Zone...
Only a Sith deals in absolutes.