Hint: Most of it is literally polyester dust. You know, that stuff produced by the bees.
You know, for kids. Only there we call it "minky fabric".
To stop mothers and other Karens (male, female and otherwise) from complaining about things they clearly know neither jack nor shit about.
Also, we've been making plastics for over a hundred years now. And contrary to popular bullshit - its been falling apart ever since.
Meanwhile, since the introduction of plastics, world population quintupled to over 8 billion and decades were added to life expectancy.
Have you noticed how lately politicians and celebrities (i.e. court and the jesters) keep clocking it in around 90+ to 100 years when they check out?
These are people who grew up in a world where running water, indoor plumbing and IOL were new and incredible technological marvels.
Were the plastics deadly or even harmful to humans, no one would have survived beyond the seventies. The 1970s.
Something tells me we'll continue NOT seeing people dying of microplastics.