While you are correct that NACS is basically a Tesla connect using the CCS standard, which is why passive adapters are possible, it really isn't relevant to the Telsa should have used a standard discussion. Tesla's original fast charging standard was out before CCS and they increased the power quicker than other standards. Once CCS caught up they added the ability for their vehicles to speak CCS so Tesla owners could use the sort of cheap passive adapter that CCS vehicles are now able to use for NACS.