Fake News.
The scale on the news.com article has no tare button (so it's weighing the container, too, thus claiming the mince is under 322g) and we don't know when it's calibrated. It's one of their "nut scales" probably designed to make people think they're buying less so they don't notice at the checkout and end up paying more.
Furthermore, the claim of around 310g mince means that the container can theoretically hold more than another 50% of mince (to get to the 500g). That's blatant Fake News.
The problem in the picture is the scale, not the mince. The real scale at point of production has a tolerance limit of 5% either side and the machine will flag a fail and shut down if there are 6 or more fails in a run.
It's Fake News.