This take is extremely disingenuous.
TikTok is a espionage and propaganda vector currently controlled by China's ruling regime. The only decision at this point is whether China continues to operate their propaganda and intelligence operation with free reign within the US. The only question at this point is whether Trump is in the pocket of the CCP.
TikTok's propaganda is clearly targeting Trump. I mean, ByteDance rejected a sale and instructed TikTok to unitalerally turn the lights off and post messages on how Trump was their savior. This is extremely transparent. There is nothing Biden could do to counter this.
What makes your take extremely disingenuous is the fact that you are arguing that Biden should fold to the CCP's pressure to continue their propaganda and intelligence campaign within the US, and you're trying to frame this somehow as keeping a major social not in the pocket of Trump. As if Trump is the issue.