How absurd can you get? Someone needs to sue these people for stupid lawsuits that end up raising our costs for food.
Did they test the soil where the grapes are grown? No.
Did it occur to them that as a bunch of "environmentalist lawyers" that they aren't qualified to understand test results or what would be valid tests to determine where trace minerals come from? No.
They automatically assumed since different batches grown in different areas show different amounts of trace minerals that it's "because of manufacturing", yeah that would have been my first guess.
I'm wondering if they even know what balsamic vinegar is. Some "balsamic" vinegar on the market is mostly wine vinegar with caramel coloring added.