I’m a little disappointed that they looked at each of social media, phone use and video game use independently as part of the study and didn’t seem to consider any covariance. If you’re looking for which things are really associated, seems like it’d be helpful to see where they overlap.

Honest answer is probably that they intend to replace those dyes because people won’t buy the products if they don’t look appealing, and the food science, testing, sourcing, manufacturing changes and regulations all take some time. Sure, it might have been better to start years ago, but the 2nd best time to plant a tree is today.