Since Meta announced they would stop moderating posts much of the mainstream discussion surrounding social media has been centered on whether a platform has a responsibility or not for the content being posted on their service. Which I think is a fair discussion though I favor the side of less moderation in almost every instance.
But as I think about it the problem is not moderation at all: we had very little moderation in the early days of the internet and social media and yet people didn’t believe the nonsense they saw online, unlike nowadays were even official news platforms have reported on outright bullshit being made up on social media. To me the problem is the godamn algorithm that pushes people into bubbles that reinforce their correct or incorrect views; and I think anyone with two brain cells and an iota of understanding of how engagement algorithms works can see this. So why is the discussion about moderation and not about banning algorithms?
If you model and infer some aspect of the user that is considered personal (eg de-anonymize) or sensitive (eg infer sexuality) by means of an inference system, then you are in the area of GDPR. Further use of these inferred data down the pipeline can be construed as unethical. If they want to be transparent about it they have to open-source their user-modeling and decision making system.