As a european, talking to any american, we notice you guys have levels of propaganda that are way way higher than what we get. And we do get propaganda.
The notion that without tiktok you'll now get anything "true" is laughable.
I think what you are saying could possibly be true, but is probably hard to quantify. Anecdotally, I have a friend living in the EU that claims the opposite of what you are, but I have no plans on taking a stance until I see some kind of proof.
Personally, I'm not too concerned with the propaganda factor, but of course I'm still affected whether I want to or not. I just don't feel it's a strong point.
What is really concerning though is the other points that a lot of commenters fail to bring up:
#1 - The ability for a foreign nation to streamline targeting an American with real time location data is one - for example, a high ranking official has the app or has an aide that uses the app. The high ranking official can then be targeted.
#2 - Another really good one is that China subsidizes TikTok content creators. This is a form of economic warfare against Americans and also a way to generate more growth and users, which ultimately strengthens the capabilities of #1.
There are more of course, but I have no intention on writing a dissertation. My point is that propaganda shouldn't be worried about as much as the risk to national security.
Lastly, I say all this having a great respect for people of China. They feel like one of the countries in the world that takes the "knowledge is power" saying seriously, rather than just using it as a punch line.
The notion that without tiktok you'll now get anything "true" is laughable.