The idea is to remove the time at the petrol pump mostly. Charge at home, or once it gets more widespread, at your parking lot.

But overall, I guess the costs are going to be similar if not more expensive. EV feels less like a car, and more like a planned obsolescence iPhone-like-gadget. Old computer desktops can last 7 years or more, phones and tablets, 2-3 years to coincide with telco plans. ICE cars can last decades, EV cars will be lucky to get to 10 years.