I suppose ignorance regarding the fact that interconnects ALL comprise an, "RLC" network, to some degee, is fairly widespread.
Dielectric absorption can be real and can also be completely unproven to make any difference at all in a given system, or the effects could be relegated to nano and pico volts of difference. Proving something has a mathematical difference is very very far from calling it perceptible.
Like vibration isolation devices, would be super easy to measure differences in actual reproduced sound, but strangely enough no one ever has.
In the end, if you personally can't hear it, it's worth ZERO dollars. If you can hear it, is it worth any dollars? That's still up to the buyer.
Best,
E