My understanding, from speaking with someone at Facebook who has worked in this area, is that they are primarily empowered to do individual fixes. I.e. they do root cause analysis on why content X was correctly/incorrectly handled, update processes, and repeat.

The problem instead seems to be a systemic one. i.e. What kinds of posts does the platform incentivise and promote as a whole? However, changing the system would require significant product updates and harm the bottom line, as it would likely result in lower engagement.

We're also in this weird position where politicians seem to want to hold platforms accountable for content which is legal, but objectionable. This is also exacerbated by employee activists wanting to do the same.