> Their interpretation of the statutes is secret
Their application of the statutes to facts that remain classified are generally classified, sure.
> The charges related to these warrants are secret if not adjudicated by the court.
There are no charges directly related to the warrants because they are not criminal warrants. If there are criminal charges indirectly related to them, they are not secret, and are pursued in normal US courts, by normal process.
> To be more direct, the existence of this court is an abomination in the context of a democracy.
There may be ways to improve the processes of these courts, but given the functions they deal with and the facts that in other democracies (as in the US prior to FISA) there is often no court oversight of foreign intelligence surveillance, I think their existence is actually a positive thing.