These really aren't very similar. Big Tobacco's lies were the only thing propping up the tobacco industry. As soon as the truth became clear, their industry was absolutely crushed. The truth about climate change has been clear for decades, but unlike the situation with tobacco, the demand for Oil & Gas keeps on growing[0]. This is because, unlike tobacco, Oil & Gas is absolutely indispensable--especially for developing countries.
Lying about climate change was a terrible thing, and it cost us precious time. But we still need them to keep the lights on, and pretending that the act of producing Oil & Gas today--when it is literally a hard requirement to keep the lights on around the world-- is somehow pernicious, is just silliness. The world is stressful enough without all the outrage theatre.