The main thing is that the cost of fuel vs. the cost of electricity meant that we are saving ~$100/month and the difference in car payments for ICE vehicles vs EV was smaller than that.
Although I'm pretty sure this only holds for new vs. new. The "used" market for EVs is almost non-existent and the savings you get is not nearly as large in used as it is for ICE. So if you are willing to buy used, then yes, ICE is still going to have an advantage for a while. But for new vehicles at least, modulo all those factors up above, it's already the case that some EVs are cheaper than comparable ICE vehicles.