It's not even just about propaganda. Watch Tik Tok videos in China and it's all young people helping the elderly, learning job skills, and doing other socially virtuous things. Watch Tik Tok videos outside of China and it's all videos of kids stealing cars, eating Tide pods, and pranking people in Home Depot.
TikTok shows you what you want to see. I see a lot of musical covers, dumb jokes about the Dune films, standup comedy clips. I don't know what first ~20 videos a brand new account with no history sees but this caricature of TikTok (Tide Pods? really?) is pretty outdated.