Your reading comprehension is weak.
That was not the point of the article, at all, read it again slowly. They say they are taking too large of a portion of the blame - not denying the climate climate change science. They agree there is foundation, but blame coal and other sources.
Classic "but, but China does it more!" flawed argument.
"Key Questions and Misplaced Blame
To argue that Big Oil should be held primarily responsible for climate-related disasters, one must accept three questionable premises:
Companies responsible for just 5.4% of total emissions should bear the bulk of the blame, while ignoring other major contributors, including coal producers and nationalized oil companies.
Producers, not consumers, are responsible for emissions. Oil companies extract and refine fossil fuels, but consumers—individuals, businesses, and governments—burn them (while deriving benefit from doing so).
A handful of Western corporations should be punished despite accounting for only a fraction of global fossil fuel production. The vast majority of oil and gas production comes from national oil companies, such as those in Saudi Arabia, Russia, and China."