Um, well, wow, I don't think I want to even say anything.
You know, if you have speakers with weirdo requirements like "total amplifier output impedance plus cable resistance must be less than .1 ohm", well, um, yeah, you might need welding cable and a massive brick of an amplifier.
If you have a speaker with a design that doesn't have wild input impedance, maybe not so much at all.
So there is some chance for issues with speaker cables. I might hesitate to blame the speaker, though.
Interconnects should only make a difference if they're broken (or intended to have unusual properties that are more than mere wire).
What happens in the real world may vary. People do many strange things.