This isn't following china but responding symmetrically to a hostile economic action. The government regulates commerce so just like they can ban Google from op

This isn't following china but responding symmetrically to a hostile economic action. The government regulates commerce so just like they can ban Google from operating they can ban bytedance. If the apps you use only affected you, I wouldn't care bur China is using this information as a strategic intelligence source to influence and harm american economic and political entities.