For c to c cables, the devices need to be able to communicate with each other to establish which one is the host (the charger in this case). With a to c cables, the type a side is assumed to be the host by default. You’ll often find that manufacturers of cheaper devices prefer not to spend the extra money to implement this technology, though some will, and in fact allow for even more functionality. For example, one of my flashlights does have that chip, so it can both charge from a c to c cable if a charger is detected, and also automatically act as a power bank if I connect a device to it such as a mobile phone.