
Would also note that this charger was 47¢/kwh. That’s $0.134/mile - very close to the gas calc you did
So OP is talking about spending only $4 to top up, but that’s basically the equivalent of buying a gallon of gas at this energy price. Basically you need to charge at home to get the pricing benefits over gas.
Obviously a bunch of other benefits to EVs

Yeah and better for GHGs obviously
And depending on use case, can be more convenient than gas - if you only have a basic commute and can charge at home. But gas may still be more convenient for some people (long distance in rural or remote areas for example; apartment living for another)