They’re not interested in conversation - they seek to disrupt it.
We’d love to see just some decent explanation of what’s going on. I’d be happy with some simple measurements. If there’s a subtle but reliably measurable difference in speaker output between the two cables, that’d be enough to convince me, and we’d have a solid explanation of what’s going on. I would expect the cable manufacturers to provide this data on at least a small selection of amps and speakers, not a task for end users. Although, I have a calibrated mic. and REW so I can do those sorts of things. I have done it with amplifiers, but never felt a need for cables because I never thought I heard anything. If there are important differences, these can be described by the cable specifications, just like the parameters on a speaker driver.