"Had (ex) president trump been charged under section 2383, he would have received the full panoply of constitutional rights that all defendants are afforded in criminal cases."
Your dissenter makes my case for me. He was NOT charged in a criminal case, as Section 3 is a disqualifying clause, and contains no penalty.
The list of those disqualified in the past includes six officials aligned with the Confederacy who held office after the Civil War, as well as former New Mexico County Commissioner Couy Griffin
No one who has been formally disqualified under Section 3 was charged under the criminal “rebellion or insurrection” statute (18 U.S.C. § 2383) or its predecessors.