I have 2 meter speaker cables 7 Awg and they measure 5 mili ohms and 5/6 mili ohms (meter bounced between 5 and 6), that is 5 or 6 hundred thousands of an ohm right?

DC resistance for each speaker is 7.5 ohms. each. So short runs of heavy speaker cable don't even matter, for the most part they are electronically invisible?
There is more likely more deviation of ohms in the crossovers and speaker coils than account for my speaker cables combined .
Why all the hype about heavy speaker cables?