If it was public I highly doubt there would be such efficiency.

If I was a judge on the panel and I knew there will be little to no public scrutiny, and even when there is scrutiny like the article it zero details are given and no punishments, I wouldn't try nearly as hard to protect people's rights above everything.

Especially if the only people arguing for it is the government, there's no one defending the people except the judges themselves. All day long they live in a security bubble listening the most paranoid people in the country.

It's just too convenient of an excuse to say that they are simply getting it right every time so nothing to see here.

Secret courts are never an adequate solution IMO.