I also never understood the security threat that Tik-Tok supposedly brings. Does the CCP really want to know when my kid puts down her phone for the night or what my wifi password is? All the articles I've read about this threat never detail what the security hack is for my family of for the country.
One other thing. It has a “recommended videos” everytime you open it. A parent can do the tiktok challenge with them whenever they please. It recommends videos based on what your kid watches.
Flip through the first ten recommended videos and see if any trash comes up. That tells you what the algorithm sees your kid watching.