I see his logic but its still damn expensive, if you can’t charge at home compared to say a petrol car.
He is talking 140 miles ( 40kW x 3.5mpkW). Even at a 24p Tesla charger, its still costing £47.39 inc subscription. My uneconomical car only does 35mpg but, even at £1.50l or £6.81 gallon it only costs just over £27 to cover the same amount of miles, even cheaper if you have a hybrid or more economical car.
I’m not trying to be detromental but, rather proving a point, that if you can’t charge at home an EV is much more expensive to run than a a petrol or hybrid car.