Oof how bad. Can they study dishwashing plastics next? Good thing I used glass. I think parents these days are rather more aware of plastic leaching than those of the previous generation.
I had a situation where (and thankfully nobody was hurt) I had cooked a stew and the enameled coating from the pot I was using had popped off a 2cm x 2cm area section into the stew at sometime during the cooking process. We didn't detect it until we had served half the food.
It's been found in at least 2 different manufacturer's cups that were specifically made for children.