My guess is the average Amazon user isn't going over 8 characters and aren't using multi-case passwords to begin with. While stronger passwords would be ideal,

My guess is the average Amazon user isn't going over 8 characters and aren't using multi-case passwords to begin with. While stronger passwords would be ideal, most non-savy people are still going with "password", "letmein" and "123456" which aren't secure under any hashing schema.