> This is going to be a primary complaint people have
No. Most people never plug in anything to their USB ports where they'd notice a speed difference. Definitely not people picking up a $600 MacBook for school or casual web browsing.
I'd bet 90% of folks never do anything other than charge through these ports...
I don't think people will have many complaints about this thing, but I do think this will be one of the primary (even though it's basically a non-complaint).
It will definitely be used to justify spending $300-1500 more for a better laptop.