Correct but Trump can’t appeal on grounds of the 8th amendment violation unless he puts up that massive bond. They’ve got him cornered in a catch-22 situation.
He can’t appeal in state court without the bond, but he can in federal court.
The argument to the supremes is that that catch 22 situation is itself against the 8th. Otherwise just law fare someone $1Quadrillion and require bond for the amount before honest appeal allowed. That much money doesn’t exist, therefore any miscarriage of justice stands if you just set the fine high enough. Which concept would certainly have been against the Bill of Rights.