Yes, and due to having been used for a long time we are aware of the effects (and at least for lead have implemented reasonable rules around its use). My point

Yes, and due to having been used for a long time we are aware of the effects (and at least for lead have implemented reasonable rules around its use). My point is that the longer we have used and consumed something the better we understand it. We are more likely to know and understand the risks. So we should be extra cautious with new materials. Something that we have been eating for hundreds of years with no known negative effects is wildly different than something that a company discovered (naturally or artificially) last year and didn't find any negative effects with some short-term tests.