Not clicking but if this is the one from a while ago its specifically about plastic teabags. And, like, obviously.

If you stir with a plastic spoon you’ll have even more

This study is such bullshit. They took 300 teabags and boiled them in 600ml of water while stirring at 750rpm for an unspecified amount of time, and claim their method to be an accurate simulation of making a cup of tea.

Pro tip from someone who encounters these tea bags a lot and was already uncomfortable with them. Open the bag and put it in a french press or metal loose leaf holder