There’s proof from Federal agencies that they knew the algorithm was intentionally being weaponized to agitate and promote domestic protestors. Just look at the Chinese consulate shut down when 45 was in office last in Texas. It was rumored to be the base of operations for where the Chinese were weaponizing the algorithm against American interests.
we’ve seen this strategy of “intelligence agencies have proof, but they’re not releasing it” play out many times. i remember when the Hunter Biden laptop story had “all the earmarks of a Russian disinformation campaign”.
i am not sure why this would give you any confidence that they have actual proof.