TikTok does not actually have many such videos since they get taken down far more aggressively than they do on, say, X/Twitter or Telegram. However, TikTok has the eyeballs of the vast majority of the young people and they talk about the ongoing atrocities nonstop, and it's crushed the image of both Israel and USA over the past 6 months. From that angle, it's a huge national interest issue for both the countries' ruling establishment to get the censorship level (and censorship priorities) of such topics on TikTok under better control.