I'm neither a lawyer nor an American but AFAIK according to past SCOTUS rulings, it is illegal for the government to "outsource censorship" to private parties in order to silence speech protected by 1A. A relative of DNC's Podesta or an FBI lawyer working for Twitter add to the impression more than the legal argument I guess.
I think from the legal POV, an @ElonJet suspension backstory wouldn't be as interesting as the other installment of "The Twitter Files."