January 6 committee found that Twitter and other social media companies gave Republicans preferential treatment on social media out of fear of criticism/reprisal. https://www.washingtonpost.com/technology/2023/01/17/jan6-committee-report-social-media/
What the Jan. 6 probe found out about social media, but didn’t report

The Jan. 6 committee's 845-page report offered few details of social media's role in the Capitol riot. Transcripts and an unreleased memo shows the committee knew more.

The Washington Post
@parkermolloy social media isn’t regulated precisely because politicians can use the threat of it to push their agendas. The republicans just happen to have been screaming “liberal bias” at anything that moves for the past 20 years; they have a comparative advantage.