I don't disagree. My point is more broadly about the ills of social media, and how it's often framed as a Facebook problem.
Facebook is the biggest. And we have evidence of the harm it, specifically, causes, in a way we don't for its competitors. They also have a spectacular track record of lying and lawbreaking.
Just to reiterate, it's not that it is "just" harmful. They are actively studying how to make it even more so.
Instagram, TikTok, Snapchat, Reddit and Pinterest each have more MAUs than Twitter [1].
[1] https://www.searchenginejournal.com/social-media/biggest-soc...