That said, one-time-use plastics are absolutely obscene and need to be removed from society as soon as humanly possible.

Those seem to be somewhat conflicting viewpoints. The overwhelming majority of single-use plastics are PE or PP, which also don't really have much in the way of additives.

PVC, ABS, and others in those families are what need the really harmful plasticisers, and also cost a lot more; as a result, they aren't going to be chosen for single-use applications unless there are other important reasons to do so.

Then the article goes on to mention PFAS, which is related to fluoropolymers, another very different category. I'm sure FPs are used in some single-use applications, but they are not cheap compared to PP or PE so they'll be massively lower in volume.

I hate how articles like this just promote a "plastics = bad" narrative, and they didn't even mention what type of microplastic they found.