Initial and resusurected calls to ban tik tok were based on Sinophobia. The 2024 "intelligence report" is baseless propaganda. Just because all of the politicians want war on China, and the tech oligarchy prefers less competition, people, and especially young people, would prefer having access to it. That Trump found the platform useful to his campaign, didn't stop DNC candidates from also having accounts.
The main reason to resurrect the ban was an election scare of non-zionist media access, and failure to dictate zionist content filtered from US audience. IDF massacres/genocide self posted for Israel audience, and Palestinian displeasure of such, fails to inspire young people's appreciation of genocide. Having Netanyahu embarass Biden/Blinken/Sullivan on ceasefires and fake hand wringing, was successful in suppressing youth vote, and was no threat during election. An Israel final solution is now firmly backed, and protests for genocide will be punished harshly in US, including muslim deportation schemes. Netanyahu, and US zionist election deciders, need Trump/GOP's anti muslim base to fully control "democracy".
The fear that Tik Tok could show truth as part of democratic process, is why it was a big political issue this year. It is all BS and corruption, though. Election is over, and tik tok will not prevent Israel domination of US and middle east.