An all-American clone of an app like TikTok is not much better than TikTok itself imo, all things considered

There are deeper and farther-reaching issues here than competition between nation-states for information supremacy

Effects of regular use on cognition and attention span, data harvesting, pervasive advertising, etc

This affects humanity at large and the US particularly profoundly, as the US is friendlier to the most pernicious media business models than nearly anywhere else, and we are among the world's most addicted to new media

National sovereignty/security concerns are understandable and legitimate. This is a criticism many outside the US have been leveling at relentless American cultural export for decades