The point here, for those downvoting this post, is that if you go out and buy something "with USB-C" it could for example only support the Low Speed rate of USB 1.0 (that's all of 1.5Mbps, only good for stuff like mice and keyboards) and still be absolutelly legitimatelly be listed for sale as "having USB-C" because that's just the connector format.

(Actually it's even worse, as there is a charge only mode for that connector which does not require supporting any USB data modes at all)

There is indeed a connection between the connector (pun not intended) and the maximum speeds supported (but not necessarily present) because USB-C adds additional data lines not present in USB-A or any of the USB-B connectors, which allow higher data throughtput, but the connection is only in the direction of "higher speeds require USB-C", not "USB-C implies higher speeds".

All this to say that, IMHO, the previoua poster is right in calling attention to the difference.