One thing in the article surprised me: "Though the bureau’s ability to weigh items has been limited during the pandemic because of restrictions on in-person data collection".
I don't see the need to weigh items. There's nothing to suggest that manufacturers are reducing the weight without updating the amount marked on the packaging.
What's more interesting is the Amazon world where things are designed to be posted. Which they don't seem to mention. I'm surprised high end hydrated foods aren't taking off or ultra light materials using in design.