Just like every other social media site, but to the DOJ this one is bad because it's directly Chinese and not merely heavily invested in by the Chinese.
Chinese companies are totally beholden to their government.
Basically our downfall is our unending need for profit which will see us selling ourselves down the river.
EDIT: Fine here is some data. "Each Facebook User Is Monitored by Thousands of Companies" You're telling me not any one of those companies is likely to be a foreign intelligence agency's shell company?
https://www.consumerreports.org/electronics/privacy/each-fac...
As a Canadian, I fail to see why I should be more worried about "the Chinese" than the Americans.
Where are the headlines: Meta collected Department of justice romantic and pornography habits. Google collected exact location down to the minute of all FBI agent locations for their entire careers. Microsoft has Recall database of every single government employee, able to download with 1 bit flip in a mandatory update.