I have tried, like you, to educate those on this forum for years. In fact, it is your knowledge that has guided me.
So, l want to give one last clarification on the RCA/XLR conundrum:
If your equipment supports the AES Standard, then whatever cable you use should not impart a significant sound quality difference.
If you use equipment not supporting the AES Standard or use RCA (unbalanced) cables, then you may/may not find significant differences in sound quality in using different cables.
FWIW, my dealer suggested some AQ Balanced wire to be an upgrade to the wire Atmasphere sold me for his equipment (25 ft length). Long story short, I noticed no significant difference in sound quality between the two cables. They both sounded good, but given the price difference, I would buy Ralph’s cables.
Audiogon members come here to find information. Hopefully, based on experience and fact.
Though I haven’t been here very long, I have found the advice/information Atmasphere has given to be sound and based in fact. It is the reason I ended up buying his equipment. (And, given his ability to produce quality equipment, I probably will be getting his Class D monoblocks in the near future.
Bob