TikTok shares your data more than any other app and it’s unclear where it goes
Nobody knows where any of their data goes and few people care. Tiktok is currently better at Algorithms than other SM, go figure. Some people hate Tiktok because they’ve never used it and incorrectly think it’s all dancing 14 year olds; others simply hate China because despite having a market economy its  government has a little more power than in the West, which allows China to sometimes act outside the myopic lens of market logic when necessary (blasphemy) while reaping the market’s gains.