It would be a mortal wound, remaining users would bleed off, and the small contingent that remains would hold much less overall influence.
ETA: Here’s one article I was able to find about it buried under more recent ones. I’m not sure how long it was removed for, but I do remember checking the Apple App Store at the time and not being able to find it, though it still worked if already installed.
https://www.rollingstone.com/culture/culture-news/trump-tikt...
https://en.wikipedia.org/wiki/Donald_Trump%E2%80%93TikTok_co...
https://www.nbcnews.com/tech/tech-news/us-start-blocking-tik...
- Make sure the FCC removes blacklisted apps from app stores.
- Require ISPs to block access to the sites of those sanctioned companies.
- Make foreign employees of sanctioned companies ineligible for most visas.
- Require U.S. national employees and others affiliated with it to register as foreign agents.