This argument avoids the issue of battery depreciation as well as the fact that if you took the battery out of the car it's value goes to the scrap value.
For the cost of a new battery, you essentially get a car that performs just as good as the day it rolled off the assembly line. And since most tend to come with collision avoidance ability, more EV's might outlive their first battery without any accidents.
If you buy a electric car, you're not doing it to save money. The optimal ROI remains a 12-24 month old car with a certificatation program that you keep for 8-10 years. I'd rather do that and have $30k in the bank than futz with electric cars and unknown service lives.