This is such a non-issue. There is no "design flaw." Its called user error. For some reason people insist upon wrapping the cord so $#!&ing tight that they destroy the cable. I've had countless macs thru the years and have never had this problem since I simply wrap the cable loosely. Its just common sense, but many people lack it. And I don't think some people can learn it.
Also, have you ever seen this type of person: They're just unusually HARD on things, they have no finesse or gentleness and destroy (often unintentionally) by being so ROUGH with stuff.
Gotta be a MENLY MAN.