We're still learning a lot about the hormonal effects of consuming microplastics and plasticizers (among other things) but it's all pointing in some pretty nasty directions, and until recently we didn't have much awareness of how much of the stuff we were consuming. We have to decide how much of the stuff we're going to try and prevent from entering the environment and our water supply, and I wouldn't want the people making that determination to be informed by ideas like "well, it's not as dangerous as uranium or lead so let's just not worry about it."