Not everyone on HN is a U.S. national. Many are Chinese nationals. So the discussion here has conflict of interest depending on one’s allegiance
[1]: https://www.chinafirewalltest.com/?siteurl=news.ycombinator....
International Steam is also banned in China yet we curiously see the majority of users nowadays use simplified Chinese.
In the context of a discussion on a US-specific ban on TikTok I'm taking the "us" in OP's post to mean people in the US. If you aren't in the US the ban doesn't apply to you so the discussion is irrelevant.
In a way, this thread could very well be monitored and commented on by a non US nation state