In fact, that is the whole point of the purchase. Microsoft would replace the entire US operations team with US employees, and vet all the code. There would be zero reasons left to ban Tiktok on the grounds of national security.

For some reason, I'm not seeing many people talking about this at all. Everybody is still talking about justifications about why Tiktok should be banned. I therefore suspect that the issue is more emotional than rational in nature.