Well, one point is that TikTok reads one's messages, even those not shared.
You've probably heard lots of bad stuff about the popular social media app, so why is TikTok dangerous for your privacy?
www.makeuseof.com
Another point is that it's probably a little dangerous to have so much influence on the information Americans receive. We saw what happened with Twitter, and the Nazis running it were Americans (so they claim

).
HR2617
[Link] does not state the reasons for the ban; it simply bans it.
I don't get spam texts on my phone - only a couple of apps like my bank and house temp. I deleted the apps my phone came with like YouTube.
I get spam emails on my computer. I don't read them, can tell by the subject header, just delete.
Home phone gets spam calls - I don't answer if I don't recognize.
I don't see ads anywhere on any device. Ad blocker.
I bet some people who don't think the TikTok thing is a big deal would feel differently if Russia owned the company.