1. TikTok would literally rather shut itself off from its largest market, than divest its ownership from PRC; says a lot about who's really in control here.
2. They really believe they have an edge in their algorithm that they would rather go dark than divulge it.
Tiktok's tentative US buyers (probably a consortium led by Steve Mnuchin or Jeff Yass) says there is no way the Chinese have the technological edge here and US engineers can successfully replicate it so I lean towards no. 1.