[AndrewKemendo]

It is provably so. Namely if this is a serious interest I suggest you write to the House or Senate Select Permanent Committee on Intelligence [1] [2] and request documentation of such.

In fact the court is adversarial, though not like you seem to be envisioning. There are many courts in the US, in fact most where no litigation happens because it's inappropriate for the task. So the idea that they are playing "both sides" is a non sequitur.

The role of the court is to ensure that requests are legal and there is sufficient evidence to pursue the task as requested. It's exactly the same as when a judge issues a warrant.

[1] https://intelligence.house.gov/

[2] https://www.intelligence.senate.gov/