Right, but I assume what it means is that any Apple charging cable will be generally useless as a USBC cable for anything other than charging an iPhone, which very much violates the spirit of the EU anti-waste law.
For most people, it won't matter. But a USBC cable which can't support USB3 data rates probably also won't support proper USB-PD, or USB-HDMI/DP, etc. The dream of having one universal physical standard for charging and high data rate comms will be violated in principle, even if it makes little difference in practice.