That is all true. On the other hand, there are undeniably problems that are truly significant and getting worse like the increase in certain cancers, infertility, autism etc. that we don’t know are related to plastics or other environmental pollutants because we haven’t been looking. RFK Jr has been all about vaccines and autism for instance with very little to show for it while the first study of BPA does show a possible (albeit modest) link in children with preexisting genetic vulnerability. How to solve it is a different matter.
https://www.medicalnewstoday.com/articles/common-plastic-additive-linked-autism-adhd
It’s always a game of learning and adapting. I think BPA could be replaced. There are known replacement chemicals. The problem is, they are a bit more expensive. But more importantly, we don’t know the potential health effects of these replacements. They might be worse.
Same with Phthalates in polymers. These are pretty much already being phased out.
There are still places in the world where plastic use (Kg per capita) is an order of magnitude lower than what the industrial world uses. You would think it wouldn’t be THAT hard to do designed studies. Of course, someone has to want to do it.