Tesla’s connector is lower weight among other advantages and a simple adaptor allows for Type 2 or CCS charging as well. We are very early into the EV transition to be worrying about backwards compatibility.
CCS just adds two large pins under the Type2 for DC charging. No sense to have those heavy pins when you’re charging from small 3.7kW home wallbox.
Anyway, using slightly larger pins in a home connection is trivial vs the overall advantages. It’s the heavy gage wiring and active cooling that makes fast chargers heavy and that’s where you notice the added bulk and weight of the backwards comparable connector.