I grew up fishing for salmon and live near streams where this issue is happening. Some bright and young researchers worked very hard to identify this root cause. Yes, I felt annoyed by the snark and dismissiveness in your comment. It rings of cynicism and tears down their hard work as a corporate PR scheme.

If you cared to read a little bit about the study, you could find the funding sources. If you want to connect the dots to this mystical tire manufacturer waiting to take over the market please share your sources.

"This research was funded by the National Science Foundation, the U.S. Environmental Protection Agency, Washington State Governors Funds and the Regional Monitoring Program for Water Quality in San Francisco Bay."

https://www.washington.edu/news/2020/12/03/tire-related-chem...