If FB had intuitively decided that too many positive posts had a negative effect on users (as contemporary research was suggesting) and amplified negative post visibility, there’d be no controversy. If FB decided intuitively that positive posts were good and they should reduce visibility on negative posts, there’d be no controversy.

Since FB A/B tested the effect of both and let academics analyze the data, that somehow means they are demonic.

https://www.pnas.org/content/116/22/10723