This also is a fallacy, and assumes all Tesla buyers were shopping for an EV only. I myself did not buy a Tesla because its electric, but because it is the coolest and IMO best vehicle available. Many other Tesla owners are like myself in this respect. The real competition is not other EVs, but high-end ICE sedans and SUVs. Mercedes, BMW, Audi, Range Rover, etc.
The Supercharger network is why Tesla is special? Uh, no. Not even close. I don't even know what would make anyone say that. It's super convenient for road trips, but the overwhelming amount of total charging is done at home.