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
This has been obvious for a very long time, and it's made the right-wing whining about "anti-conservative bias" that much more ridiculous.
And if you actually look at what "the Twitter files" show (what the actual screenshots shared by Musk's right-wing lackeys and not their biased commentary), it's mostly Twitter hemming and hawing over whether to actually enforce rules that were being broken on the regular by Republicans. That's not "anti-conservatives bias," that's preferential treatment for Republicans.
@parkermolloy "look, libsoftiktok was flagged"... yeah, with a flag that meant no matter how many times it broke twitter's rules, it required the CEO, the chief of legal and someone else to agree before any action was made. It was PROTECTED.