fwiw china didn't block US apps, it's china blocks apps decide not to follow the chinese law, regardless if it's US app or from any other country.
If tiktok has child porn or some other illegal stuff, i'm totally fine with blocking it. But in this case, the only evidence so far is, it's a chinese app, not because it's breaking any law.
That is absolutely not true. China has blocked and shut down plenty of services that are following the law simply for protectionist or narrative control reasons. When twitter clones started popping up in China they shut down 11 services and chose a single one to survive, that being Weibo.
If tiktok has child porn or some other illegal stuff, i'm totally fine with blocking it. But in this case, the only evidence so far is, it's a chinese app, not because it's breaking any law.