This is correct. People like to conflate the privacy concerns about American social media with the national security concerns about TikTok, but they really are different things. Yes, privacy will still be a problem, but a) no more than it is with any other social media platform, and b) at least the incentives will be transparent. Publicly traded companies want to generate a return for their investors, which they do by focusing on growth and profit, to varying degrees. So it's pretty easy to understand that everything they do is going to ultimately be to the benefit of their bottom line. And their leadership, shareholders, and operations are subject to American laws.
With a Chinese-owned company, their incentives are to do what's best for the CCP. In the short term, maybe that's making some money and allowing American Zoomers to work themselves into a frenzy over Gaza, but it may also be interfering in our elections, undermining support for NATO and Taiwan, pushing pro-CCP narratives, etc.