The FDA regulates what gets to be called "mayonaise", and the investigation was about whether they were allowed to use the word "mayo" for something that didn't have egg in it. They settled by putting "egg-free" on the front label in reasonably large text.
I think that's fair, but I remember the stump piece that was trying to paint the FDA as obstructionist, it felt very dishonest.
They did get sued because of that but they got away with it somehow.