To be honest it sounds like you've only read the titles of those articles.
Your Futurism article directly contradicts the claim that any of this behaviour is unique to TikTok:
> This isn't the first time that a major social platform has been caught spying on specific individuals. In the past, Facebook and Uber have both been in the hot seat for tracking the locations of journalists and political figures.
The byline of your June 2022 Buzzfeed article implies that TikTok was already actively working to remove foreign access to the data:
> an external auditor hired to help TikTok close off Chinese access to sensitive information, like Americans’ birthdays and phone numbers.
This largely appears to have born out based on the PBS article regarding the recent congressional hearing[0]:
> As of October (2022), all new U.S. user data was being stored inside the country. The company started deleting all historic U.S. user data from non-Oracle servers this month, in a process expected to be completed this year, Chew said.
> access to U.S. data is managed by U.S. employees through a separate entity called TikTok U.S. Data Security, which is run independently of ByteDance and monitored by outside observers.
The hearing itself was mostly evidence of how unfit many of your elected officials are for office. From a previous comment of mine:
> Buddy Carter confidently believes that TikTok is tracking it's users emotional response through pupil dilation but has no comprehension of why you'd need to identify someone's eyes to put a motion tracking filter over them[2]. According to Mr. Carter, TikTok isn't doing enough to protect younger users but thinks that asking a user their age and checking whether or not the users public videos align with the age they declared is "creepy".
> Dan Crenshaw used his time to state that Chinese law requires it's citizens to co-operate with their national intelligence agencies. That might have been a good point if not for the fact that TikTok's CEO, the person Crenshaw was questioning, is not Chinese.
> Richard Hudson proved himself unable of forming a coherent question as to whether TikTok attempts to access other devices on a WiFi network. Instead asking "So if I have a TikTok app on my phone and my phone is on my home WiFi network, does TikTok access that network?"
[0] https://www.pbs.org/newshour/politics/watch-live-tiktok-ceo-...
[1] https://edition.cnn.com/2023/03/25/tech/tiktok-user-reaction...
[2] https://www.youtube.com/watch?v=sZDpJHl6amo