I think this is spot on. I bought a new EV 6 months ago. I brag about paying less than $0.03/mile even with a large EV, but it's completely dependent on charging in my garage and being on a plan that reduces my night-time electricity cost down to $0.07/kWh. At cheaper DCFC stations ($0.39/kWh) it's about breakeven with a similarly-sized ICE vehicle and at higher cost stations ($0.59/kWh) it's more expensive per mile than the ICE vehicle.

I don't think most people are caught up on the cost per mile, but the inconvenience factor. If you can't charge at home, you going to have to go exclusively to a public charger, which is already pretty inconvenient for a lot of people, and for people of average or lower incomes, they might not even have one in their neighborhood.

We'll probably see a lot more adoption once infrastructure is equitably available to everyone.