but even then it doesn’t represent one industry to another

Like.. Yes it absolutely does. Thats why we move EVERYTHING to CO2e for papers like this. CO2e is the lingua franca of discussing global warming. Its how we can compare cows to cars to trees to inhalers.

If Carbon Emissions were a Pie then this would be just one incredibly tiny sliver.

So that's a totally different argument, and if it represents more emissions (from vehicles) than 15 US states, I would hardly agree with you.

If Nebraska, or New Mexico, or Idaho, announced "We're going to outlaw all internal combustion vehicles to curb greenhouse gas emissions", would you dismiss that like you are dismissing this?

At the low end, typical northwest forest pulls in almost 6 megagrams per hectare in biomass annually. To just offset just these emissions, we would need to set aside about 321 sq miles of forest. That's hardly a trivial amount.