This is survivorship bias. No counterexamples emerge because successful and working capabilities can’t and won’t be shared? Not until declassification of those sources kicks in.
The government should not give up powerful intelligence tactics, techniques, and procedures solely because the general public has a want to know. We have elected representatives with clearances for those purposes.
You obviously didn't even try to read the source, because one of the main points is that reviews of classified evidence by people with clearance found nothing even with that access. Furthermore, people like Sen Wyden - one of those elected representatives you mention - assert, on the basis of classified[1] info shared with the Senate Intelligence Committee, the ineffectiveness of these programs[0], along with a - so far unanswered - invitation to share any such classified info behind closed doors, should it exist. The issue of classification is a red herring if even those with appropriate clearances assert a lack of effectiveness.
[1] inb4 "but unclassified programs" - he's talking about unclassified programs on the basis of classified info, as is made doubly clear by the request to share further examples with the SIC
The government should not give up powerful intelligence tactics, techniques, and procedures solely because the general public has a want to know. We have elected representatives with clearances for those purposes.