TikTok and Due Process
Though they have worked worked with US government teams (CFIUS), and might have a point about the lack of 'Due Process', the wording of the executive order (fascinating read) draws upon IEEPA rules. Deep emergency powers which are very hard to challenge.
My take, this is a defensive move, aimed to give TikTok a bigger platform and a chance to tell their story. It's not about winning directly.