I definitely agree about the risks and banning it from the devices of the govt officials makes sense but banning access to an app screams "the Chinese/Russian/Turkish way of governing has won, freedoms are no more".
I hope the US takes the EU approach and regulates what data is collected and transmitted where instead of walking the totalitarian route. In case you haven't notice, FB/Instagram/Twitter etc. are the same as TikTok from the perspective of Non-Americans(>%90 of the world) and TikTok just happen to be a first for Americans.
I've been living in Turkey for some years now and I promise you, it's not fun. Do you know that it has been 2 weeks since Turkey banned country's most popular(and earliest, dating back to 1999) social media for no other reason that they suspect anti-government activity by the operators because they think it is not natural to have concentration of anti-govt views? That's where you are headed.