Time is one of the most important values in this life. A wasted life is a life not lived. On the one hand, the law in the USA has legitimate reasons. People do not just waste their time on Tiktok, I am sure they spend more time on more useless things.
No one can predict what Trump will do. He is not a principled person. We will see what he will do about Tiktok in the future.
Then, why isn't it applied to all companies that do similar?
I think he would do what most people would do in office - do what helps himself.