It depends on the reason. If it's true that TikTok algorithm changes not by the user preference but by the corporate's political agenda it should be carefully investigated, it is a fact that social media highly affects our psychology and perception on world thus it can be tagged as a threat if all the allegations are correct, also data is a huge issue there. It is not a secret that U.S government has a specific program to process data in a way to create a pre-emptive security (which the United Kingdom holds an access to a degree) but some branches of government pursue a better transparent path to inform public, Fusion Centers could be an example to a degree, however overseeing Chinese government's activities on harvesting and processing data is almost impossible so I would lean on banning the app.
