Yes, on a female USB C connector for a device (hosts, dual-role devices etc are another matter) CC1 and CC2 should be pulled down separately.
If the pull-downs are omitted completely then a power supply with a USB C socket should not turn on it's output.
As Raspberry pi found out if you tie them together and use a single pull-down then it will work with passive cables, but at least some (not clear if it's all) electronically marked cables will fail to operate correctly.