After all, a scientific community that still discovers things at the most fundamental level, like how this or that emission or process that has been going on for billions of years affects the ecosystem, is 100% to be trusted that it knows everything there is about the byproducts and consequences of such a process.

It's not like until e.g. merely 80 years ago scientists still helped produce and sell radioactive consumer products. Or they considered thalidomide safe. And any number of such things...