I have 3 counter-arguments for this “dirty coal” nonsense:

1. Plugging into a 100% coal-powered connection still produces far fewer greenhouse gases per mile than ICE (and especially diesel).
2. The emissions are created at the power plant, and not pumped into the air directly outside your home where your children might be playing.
3. Electricity can come from pretty much infinite sources from coal to gas, solar, wind, nuclear, etc. etc. but oil only ever comes from 1 place.