The first article:
"... the device information, usage time and list of watched videos are being sent to Appsflyer and Facebook."
Hardly a smoking gun. Not only is this standard industry practice but the analytics servers in question here are American. The author says this violates European law (it doesn't). Then they go on to describe device fingerprinting which is also standard practice and has legitimate uses.
The second article's main point is that there are Chinese IP addresses in the APK and the privacy policies of different Chinese companies allow for data sharing.
The author doesn't witness any communication with these IP addresses. There are plenty of non-malicious reasons why a URL or IP address of a different company (Chinese or otherwise) would be in an APK. Maybe there is a library being used or the code in question might not even pertain to non-Chinese region versions. It would be like accusing a website of stealing data because they could use a Google font (interaction with Google IP address) and Google has such and such a privacy policy or history.
The famous Reddit comment which everyone seems to love is clearly fake. The author provided zero evidence when asked, saying that the hard drive on their MacBook failed and it is too difficult to "reverse engineer" the apps again. The accusations and methods are irredeemably vague. If the United States is going to become like China and start banning apps then it shouldn't be over a Reddit comment written by someone whose dog ate their homework.