Trust me, I came in there full of motivation for "do what is good for the actual humans", and most of the rank of file were the same. FB's employees are not evil or exploitative, though I won't say its unfair to describe the leadership in such terms.

Many times in product design meetings I would interject with "but this hurts people!" etc.

We hated that our personal careers were directly tied to increasing the junk-food factor. It didn't feel good at all. But the choice, as crafted by HR and senior directors was clear: Junk food this thing, or lose your jobs.

the problem isn't introducing junk foods into menu, but focusing on the junk foods performance and killing other food categories as the result. I know that companies need revenue to survive and improve, but they're currently focusing too much on revenue and profit that they kill everything else.

it's like introducing unskippable ads and page-wide pop up ads makes user use adblock and killing other simpler banner ads.