Genuinely no. Mostly I think the industry failed to corrupt the scientific process. Their attempts to do so were nakedly transparent. And they absolutely preyed upon the fact that real quality scientists were reluctant to definitively say the link was causal because they were being diligent about the fact that there was a preponderance of evidence that was correlative.

They succeeded in corrupting the political process though. I don't think you should need 100% scientific certainty to begin regulatory action. Maybe 80% or 90% of the way is good enough. The industry succeeded in requiring 150% certainty before a public health response could begin.