The point is that the bottom line isn’t the full story.
electric cars can be “better” but it’s difficult to know. “Cheaper” is a troublesome metric, since overt and implicit taxes and subsidies skew the true assessment.
”carbon” is thorny too, sine the power could be (but likely isn’t) sustainable-generated.
then you have “whole-life impact” and who the hell knows about that once you factor in build, running and disposal.
i like the idea, and think EVs could well be the solution for most miles for most people, but the case isn’t proven yet.
And “cheaper” shouldn’t be the sole criterion.