"I also seem to recall that Mark Zuckerberg was actually called before congress about this."
Mark Zuckerberg is an idiot. Granted, a successful and calculating idiot, but an idiot nonetheless.
He's been called into congress several times and even congress at times didn't seem to know what Facebook was nor even how to internet. But that's a tangent conversation about how congress really doesn't know how the internet works and often makes things up in their utter confusion. I'm not talking about spyware or ghost banning. Those are real. What isn't real is Facebook keeping track of your social security account, bank account, credit card etc. without you willingly volunteering it. Oh, God. I'm still on the tangent.
Anyway, Zuckerberg, or one of his many underlings was indeed called into office following the 2016 election where it was uncovered that he was allowing foreign agents to spam political ads regardless of their content or accuracy and got into big trouble. He even admitted to taking foreign money to put political ads on Facebook. At the time, this seemed like harmless capitalism. Who cares if Russia, China, or Germany is putting political ads on Facebook in support of or against Hillary or Trump? Money is money. And making revenue off of foreign bodies is awesome, right!? Well. Zuckerberg got called many things for allowing this misinformation from foreign bodies and his takeaway wasn't just to keep track of who is paying for the political ads, but rather their content.
2017 is when the War against Misinformation truly began. It just most unfortunate that it not only coincided with a Republican President, but the biggest touter of misinformation and deception - Donald Trump. Trump spent most of his presidency pushing social media's war on information by using his executive privilege. And despite how much harder social media went after any misinformation that Trump agreed with, they let him off with a pass. That is, until, Covid - when such misinformation was not only a political disadvantage but costing the potential lives of thousands of people. If not more.
The biggest thing that people forget is that what drives a corporation is liability. The only thing they want to be liable for is extreme profit. They really don't care if lives are exploited. But they do care if those lives end with a class action lawsuits.
And avoiding lawsuits is the name of the game for Mr. Zuckerberg and other social media giants.