Cuts both ways... a lot of charitains profiteering on the ignorant... and the ignorant not knowing the real problems that do need to be solved.
Any engineer who has worked on fast response servo systems that use low impedance driver, transmission, servos, knows about forward and back EMF (Electro Motive Force) sometimes called counter EMF.... and the role it plays in keeping the active element (in this case the speaker(s) in sync with the driving force (the power amp). Chincy speaker cables can negate the money that was put into buying good quality amps and speakers.. The end result is the speaker in constant overshoot of the signal it trying to reproduce.
Of course if the power amp and speakers are junk to begin with, it won't matter anyway..