Bytedance already won.
Biden flat-out admitted he was not going to enforce the law once it passed, and Trump is pushing for a 90 day "Extension" because "finding a buyer" has proven more difficult than initially expected. this statement is intended to save face as bytedance has repeatedly refused to sell.
What we are watching now is US leaders in both houses of the oligarchy (democratic and republican) scramble to undo policy that was written by people who think the US still has the type of pull it had in the sixties. banning Tiktok in the USA would mean one of the largest social platforms of more than 150 nations combined would have zero US presence.
the US must constantly and vehemently evangelize western values and hegemony in order to protect and maintain the international neoliberal hegemony it has come to enjoy. Washington realizes they have effectively and accidentally cut themselves off from a system of propaganda they benefit from domestically (election rhetoric and stumping) as well as internationally (hearts and minds doctrine of diplomacy and soft power.)
Its bad to operate in a contested environment with china, but its worse to endure a denied environment where the only voices are not yours.