That number looks about right for "because of this, every one of our teabags is recycled instead of thrown out", which is obviously not true. But it could also

That number looks about right for "because of this, every one of our teabags is recycled instead of thrown out", which is obviously not true. But it could also be a supply-chain stat, where the landfill mass of those strings and staples is measured from cotton and iron, instead of the finished products.