I've read, and watched, quite a bit on this Facebook Whistleblower. I can't say I disagree with much of what she is saying, although I think you can apply all of it to most of our major media outlets today, not just Facebook. I began to question her motivations, in particular after she told her story of a friend who went from being a like-minded Progressive liberal to something other than this (implying 'lies' on Facebook turned that person into a conservative, I'm assuming). God forbid information should make you change your mind or your views - particularly if there's one less of these Progressives in the world!
I may agree with much of what she says she's seen or even believes. I'd even like to stop what she's hoping to stop (hate speech, misinformation, lies, bullying). I can't say she knows how to stop those things. In fact, I know she can't. She THINKS she can. After all, she writes algorithms for a living, and she believes algorithms can fix anything. She's clearly a socialist of some nature, after all, she points out that Facebook puts 'profit' before stopping 'hate speech'. I found that claim interesting, since all major media outlets do this. After all, what are CRT, Cancel Culture or Wokism if not hate speech? And the major outlets are sharing those ideas quite freely and openly. So yes, profit is put ahead of stopping hate speech.
The critical part here is that she seems to think it can be reduced or stopped. I suppose it can, to a small degree. But if you want to (as she does) rely on algorithms, which she writes for a living, then what she's really saying is "I'd like to be able to control what information is fed to people at all times, and limit it to what I believe is acceptable."
I believe in choices. And we all make them. We choose to be on (or off) Facebook, social media, the internet or TV. Once we've chosen what to engage, we choose what to believe or not believe in our information resources. Sometimes (whoops) it's a lie or misinformation, though most times it's probably not (though I suppose if you listen to Biden and Fauci and assume they are authorities on anything, you're welcome to believe almost anything is 'truth' or 'science'). Part of adulting is learning to use common sense and pursue productive, effective, and meaningful parsing of data and information. I'm not sure what the whistleblower is hoping to achieve, but if it is to 'save' Facebook (as she claims) then I'm likely to believe that she's hoping to engage more situational design leading to social outcomes she believes are 'best for society'. I doubt I share her views on what's 'best' for society.
Useless 
Mick Jagger had a beer at Charlotte’s Thirsty Beaver —