Judge Emmett sullivan is an egotistical slob. He was appointed by Bill Clinton. He obviously has democratic leanings, to go after Michael Flynn like he has. He won’t take this to the Supreme Court because he knows he would get trounced and embarrassed.
And how would being “embarrassed” effect him?
He wouldn’t lose any salary, he wouldn’t lose his position, he’s at the pinnacle of the legal profession - a federal judge. He’s that for life. Maybe he won’t be considered for a higher federal judgeship but only a GOP would do that. A Rat administration would handsomely reward him - Supreme Court nomination maybe ?