While the justification for this is primarily based on TikTok being a privacy and data security risk due to it being owned by a Chinese State Organ/Corporation... which is hilarious bullshit because the US does exactly the same thing with all the net data that goes through US corporate social media...
Brainrot is a real thing.
Shortform video platforms are addictive the same way cigarretes or heroin is, extended use ruins your cognitive ability, ruins your attention span, increases depression and anxiety, and fhe format promotes an absurdly fake, narcissistic culture, scams, and mis or disinformation.
Algorithmic profiling is definitely not unique to TikTok, but it is used by the app, and this often pigeonholes the user into content/advertisements that often becomes more and more extreme, manipulative and exploitative of the user.
Though this is being done mostly for stupid reasons, and it isn't stoping US Corpo brainrot inducing social media platforms, I'll take what I can get.