This applies to pure PET, but not chlorinated/fluorinated PET, which have been shown to contain PFAS.

I googled and fluorinated PET does not seem to exist. In fact one source said it's not even possible to do that.

And just adding fluorine to something does NOT make it a PFAS! PFAS is a very specific chemical, not everything with chlorine or fluorine is a PFAS.

Sorry I meant polyethylene, without the terephtalate. https://www.sciencedaily.com/releases/2023/03/230307114431.h...

According to the FDA such containers are not permitted for food use, only for chemical storage, such as pesticides.

Additionally they are very very rare (only used where the chemical can't be contained in simpler plastics), and are not really where your attention should be on the hazards of plastics.

The amounts of microplastics are ever-increasing and there could be a serious threat from their degradation into nanoplastics: https://www.sciencedirect.com/topics/chemistry/nanoplastics

A carbon-carbon bond is 0.154nm, and the polymer chain lengths of common plastics are in the few hundred to tens of thousands.

If those are a "serious threat", then I wonder what they think of petroleum jelly... which is basically the same structure with much shorter chains, and is even more reactive!

How much chemistry knowledge some of these fearmongers have is highly dubious.