Supposedly we retired the SR71 without a replacement.
Supposedly we are giving up this NSA tool without some other backup.
I don't think so in either case.
I suspect tht you are right. Once these programs are "outed" and compromised, they have little value. The CIA's function evolved into the NRO, DIA , NSA and other functions that were more productive and less politically volatile, until the rats found them and ratted them out.