Their business model is simple. They're TV, on the internet. They buy or make tv shows, and display them to you for a fee. They're not a "platform", they're just a cable TV service.
Netflix is a video streaming service which will "collect, use, track, estimate, or derive personal and demographic information". It will "determine which ads and other content are shown to consumers". It will "apply algorithms or data analytics to personal information". It will "measure, promote, and research user engagement". And "their practices affect children and teens".
Netflix is responsible for an immense amount of screentime, and its algorithms are designed to maximize that screentime to reduce subscriber churn.
Their CEO once said sleep was a competitor.[1] They do want to maximize engagement.
1. https://www.vanityfair.com/hollywood/2019/01/netflix-competi...
I don't even know that documentary you mention, and I can assure you it has nothing to do with this decision whatsoever.
(Because it's really a rerun of West Wing that got the FTC into high gear here. "Hell yeah, let's do some governing", someone shouted, and they all started briskly walking)