Kapersky is the example you want to point at for an example of a bad actor corp capturing classified data and sending it to an adversarial government.

Not talking about collecting or sharing data.

TikTok just trended anti-political messages for a few different popular politicians and lit a match as a result.

There’s no real evidence they did.
Even if they did, that’s not a good enough reason to cut them off, though it is the reason many politicians want to; That, and the Israeli apartheid / genocide stuff.
But again, there’s no evidence ByteDance and TickTok is doing anything about those topics.

Did you read the article I linked to?
It is the NYTimes, I get it if you didn’t; Their paywall’s annoying.
Here’s a Kagi summary:

A report from the Network Contagion Research Institute at Rutgers University found that topics often suppressed by the Chinese government, such as Tibet, Hong Kong protests, and the Uyghur population, are unusually underrepresented on TikTok compared to Instagram. This raises concerns that Beijing may be influencing content on the popular video platform, which is owned by the Chinese company ByteDance. TikTok disputed the report’s methodology and claims of content suppression. The Israel-Hamas conflict has reignited scrutiny of how social media platforms like TikTok moderate content, with some Republican lawmakers calling to regulate or ban the app. Researchers have been urging TikTok to provide access to data to study the spread of information on the platform.