Unfortunately, like most issues we face, this is not a stand alone problem. I'll concede, over the length of ownership of the car, a brand new electric vehicle is more environmentally friendly than keeping your current combustion engine vehicle.
However, we don't live in a society where the majority can make that choice independent of other factors. EVs are more expensive across the board.
Even if the purchasing cost of an off-the-lot EV were equivalent to continued use of an older ICE across two years - most people can not afford it.