Are you under the impression that people pushing for EVs aren't also pushing for power plants to go green? I'm sorry this isn't a video game where we can just replace literally every source of coal power in the exact same motion.

Even accounting for power plants, EVs still produce much less emissions. Here's a plot from energy.gov:

This is also covered on the common EV myths page: https://www.epa.gov/greenvehicles/electric-vehicle-myths#myth1

But we aren't burning gasoline every second.

It is vastly more efficient to power from electricity generated by coal than it is to burn gasoline in a car. Think of all that heat just going into the air.

You might, we certainly don't in most of eastern Canada.

Coal power is a relic of the past anyway.

Not always the case. I was able to change my electricity source to 100% renewable through Appalachian Power. I also have solar panels to directly offset some of my home energy usage.