No they don’t care about that. They know foreign governments do that all the time on Facebook, YouTube, Reddit, etc. This is about protecting lobbyists’ business interests, and right now the biggest lobbyists and campain contributors are also tik tok’s competitors.
Idk why you would need textual evidence besides the Bible to be certain the guy existed. It’s not like these are magical books that sprung from the earth. They have historical reasons for existing and the most likely reason includes the existence of the dude.