The final straw was almost certainly Republican Florida Rep. Matt Gaetz’s threat to file a complaint with the FEC about the shadow banning of conservatives.
“I am contemplating a complaint with the FEC, because if my political opponents have better access to the Twitter platform than I do, that’s no different than a private company giving my political opponents access to a billboard or television time or radio time,” Gaetz said. “That wouldn’t be equal.”
Gaetz noticed that the growth of his Twitter account immediately slowed after the algorithm change and a report concluded, “Democrats are not being ‘shadow banned’ in the same way” and that, “Not a single member of the 78-person Progressive Caucus faces the same situation in Twitter’s search.”
To find out if someone is shadow banned:
https://shadowban.eu/Petition:
https://www.change.org/p/demand-that-social-media-companies-end-censorship-of-alternative-voices-online