I don't like the Chinese approach to managing the public opinion by censoring valid information and opinions at all. But the opaque and uncontrollable pockets of power created by the US approach of misusing "national security" as an excuse for practically any action, most of them being more politically motivated than anything else, is equally disturbing and problematic. Both of these ways of governing lend themselves equally well to dictatorships, which I consider problematic, especially in modern democracies, which the US certainly claims to be (the Chinese government at least doesn't claim to be a democracy in the first place).
Widely deployed apps that capture location data can and have been used to determine the location of military bases and assets.
https://www.military.com/daily-news/2019/12/30/army-follows-...
Trump's move is pure theatre. He has no clue about real security and he's throwing his weight around like an attention-seeking child, because that's what he does.
This is an entirely orthogonal issue to something that's been missing in the West for decades - a coherent program of IT security and IoT and app standards which define exactly what products and apps can and can't do, and which enforces a testing and certification process to make sure products and services stay within the lines.
And also... mandated protections for user data - something the EU is moving towards, but which the US still seems to be having issues with.
Between IoT, IT infrastructure, poor corporate security, and unregulated data capture, there are much more serious security threats than the TikTok app.
And satellite photography can’t be used to extrapolate troop numbers, movements etc. Especially given that it can be done in real time.
Estimates can be made regarding troop capacity and capabilities based on the billeting and vehicles in the photos.