I guess it's hard to know since TikTok has around 1 billion active users. They could be dramatically reducing the set of people who gets suggested such content,

I guess it's hard to know since TikTok has around 1 billion active users. They could be dramatically reducing the set of people who gets suggested such content, and yet that content could still be suggested to millions of people. Personally, I wouldn't find it strange that the recommender systems are tweaked to different countries and sensibilities as default at first, until it learns more from your own viewing patterns and refines itself.