So in other words - the last word is t spoken yet…The last word was spoken. This happened by a law, passed by Congress and signed by a president. There are two paths from here.
The first path means Congress repeals the law which implies that they are complaining about national security (instead of Meta’s failure to compete) was a lie.
The other is that Trump simply refuses to enforce the law (but expects companies to still carry that cloud of liability over them which they would never do because one tantrum from him puts them in a financial position), which undermines every time he has ever complained about his predecessors not enforcing a law.