TikTok is literally a weapon created and used to undermine the USA (among other democracies but mainly USA) and to brainwash its citizens. Anyone who doesn't see it is a useful idiot who bought into Chinese propaganda.
I'd be happy with just a minor amendment to the Communication Decency Act that would make social media companies liable for content their algorithms recommend. It's fine for them to be shielded for liability for things posted by users on a site that's moderated to avoid the problems that act was designed to prevent. But as soon as a complex algorithm is recommending content to someone, it should be considered to be the same as traditional media publishing something.
And the libertarian techbros should be happy with this because it's actually less regulation. Though somehow I think their libertarian ideals would melt away when a regulation that shields them from liability is removed.