

Looks like this is the relevant study from that video. It found people eat more calories of highly processed food when given the option, which makes sense. Weight gain was highly correlated with calorie intake though, so if you eat the same amount of calories of highly processed and unprocessed food, it should have the same weight gain.
Good video by Dan Murrel on the subject. There is a colonel of truth in that there has been a race to the bottom for film studios. But this is unlikely to help the situation, and will likely only lead to fewer movies overall.
https://youtu.be/zlhv8V5n0sQ