Good point! But a short cable(1ft or so) should minimize those reflections? Dan Lavry thinks that the shorter your S/PDIF cable, the better
The thing is that I'm not sure any manufacturer wants to increase its RMA figures on purpose because they decided to go 75Ω, but their customers ruined the connector due to 50Ω cables..
Yes, so we are into the task of trying various ways of minimising these reflections after the event - "the search for the best sounding cable"
Why don't they just standardise on 50hms & be done with it? This would seem to make more sense, no?