I think that may be an exaggeration. Xenoestrogens like BPA are shown to be hormonal disruptors, there were some studies allegedly showing that people with IBD have more microplastic in their poop, etc., but it is difficult to exactly assess the impact from it accumulating in bodies.

Some plastics do meet the definition of literal poison, but those used in bottles do not seem to, and BPA is at worst supposedly to be classified as “substance of very high concern”. Can’t believe that I would write the above as good news, but there we go.

Flame retardants from TVs ending up in recycled plastic being used for food storage, etc, etc.

It's a jungle out there and if not unregulated, then very much un-policed. PFAS was seen as completely benign for decades, turns it isn't and that is bio-accumulates.

Specific chemicals like BPA being banned in certain applications, only to be replaced by some other, very similar chemical, which then legislators play whack-a-mole with (or whack-a-sloth) very slowly, over decades.

Plus imports from China. (And some other countries, but hey, China has the volume. Shouldn't they care even just a little themselves too?)

Heck, toys from there still sometimes contain lead, which should really not be a thing in this day and age, but the fact that it sometimes still happen should indicate how little the producers and importers know or care.