If the first amendment actually protects TikTok here, as may be the case, then the courts can strike this down.

On the other hand, perhaps the first amendment doesn't block this. In that case, that relevant consideration would seems to be rare broad bipartisan support (as evidenced by a very lopsided 352-65 vote, but we'll see what happens in the Senate) to limit the potential harm that can be done by the information warfare capabilities of a genocidal authoritarian regime with whom it is certainly plausible that the US will be at war with in the next decade.

It is really unclear, absent a successful constitutional challenge, why the free speech maximalism preferences of a throwaway account on HN should hold more weight than lopsided bipartisan vote by democratically elected legislators.