The last non training NDB approach in IMC conditions I flew where I did not use GPS track information to attain and maintain the NDB final approach track was in 1994.
Before 1994 I would break out with the needle showing on track and the runway was seldom directly in front of me. After 1994 the flight path of the airplane was always lined up with the centerline of the runway and the continuous distance information and ground speed made descent planning and accurately locating the MAP much better and safer
Now that there are few good rock and roll AM radio stations left, the ADF is truly useless.