I'm not convinced of that. Tesla's connector is thinner and lighter yes absolutely. But Tesla is also weaker and less reliable \ less fault tolerant than standard EV charger cables (See the dreaded EP307 / lock error, something that can't even happen with a normal EV CCS charger)
I definitely think it's preferable for CCS win, as it's the safest, most durable, most compatible, while also being the lowest cost option.