Yep, and those cables will have dock connectors that fall off after one use, or loose internals that give only an intermittent connection, and require sufficient replacements that lifetime-for-lifetime it costs the same to buy the branded cable.
My "generic" cables have outlasted both of my iPod touches. If you believe for one minute that there is any difference between a branded and generic cable, other than about $18.95 and a nice celophane wrapper, then continue giving you hard-earned cash to Apple for their batch of cables from the same Chinese sweatshop.