Agreed, if I want to roll coal in my daily commute that is my business. As long as I produce less CO2 than an oil refinery, my actions are without consequence.
Also, there is a sense of incredibly naive detachment here. It's not like the oil refinery is working because all people involved have the only ultimate goal of killing the planet because of some evil plan. The oil refinery is working for you, to produce the gasoline you pump in your car and the plastics you buy stuff in every single day. We need to reduce demand for that stuff, through individual action too. If you use oil industry's stuff, "their emissions" are YOUR emissions.