SAS found 2 737-700’s with cracks, one with winglets and one without. They have been flying 737’s for 20 years in some of the worst conditions in the world and probably have some of the oldest frames in the industry flying. A good mix of -700 and -800 aircraft with and without winglets. None with scimitars.
Yet, only two of 50 - 60 (?) had cracked pickle forks.
I struggle to see any pattern with this issue. I think they need to look at where the aircraft were made, time period, pickle fork batches and production methodes.