I don't think anyone's arguing that it's not legitimate for a country to ban a company on national security grounds, but that this is stretching the definition of what constitutes a national security threat.
Which companies currently banned in the US would you say are comparable to TikTok in terms of the threat they could potentially pose?
> is largely unprecedented "in the US".
As others stated, if the US wants to start using China as a country to base its precedents on, that's even more concerning in my view.