"Why does banning 1984 hurt first amendment rights? There are so many other books you can read."
Banning 1984 would violate the First Amendment because it would be banning a certain point of view. Banning TikTok is about preventing a foreign government from owning an information pipeline, not about the point of view that's being pushed on it.
Anyway, all the people who claim to be concerned about the First Amendment should be marching in the streets over what's happening in Florida, not trying to save TikTok.
Its like if there was an e-reader that sat in your living room spying on you, but it displayed books for free. Banning that device is not the same as banning content itself.
The government has a long history of regulating the transmission of speech. The First Amendment protects us against them regulating the content of speech.
For example, campaign finance laws dictate who can fund speech in certain situations, but they don't dictate what a candidate actually says.
That said, the First Amendment is limited by "compelling government interest," so there are no absolutes. We are, as we have been for a few centuries, at the mercy of the whims of the Supreme Court. There are no absolutes, and the Supreme Court can interpret anything however they want.
Google, Facebook, etc all do that, and it's their entire business model.