It says "Leveraging the trace amounts of moisture in air, the broken-down PET is converted into monomers—the crucial building blocks for plastics. From there, the researchers envision the monomers could be recycled into new PET products or other, more valuable materials." I don't know if there's some enormous challenge hiding behind the word "envision", but I'm assuming it's a closed system until something useful comes out of the other end. The method just can't be a lot more expensive than to make the same thing/material from scratch or it's never going to gain traction.
If you're worrying about microplastics in your testicles, you're still underestimating how much plastic is in your body. Literally infants will already have microplastic in their blood at birth.
