https://www.scientificamerican.com/article/exxon-knew-about-...
https://www.theguardian.com/environment/2015/jul/08/exxon-cl...
https://www.theguardian.com/environment/climate-consensus-97...
The audacious PR plot that seeded doubt about climate change: https://www.bbc.com/news/science-environment-62225696
Etc, etc, etc.
So, blaming people for having stupid opinions that various companies spent billions injecting into the discourse seems misguided. At best.