I am not saying developer scratched it. But it is possible that the XX-D combination with Kodak stop and Ilford fixer and wetting agent does something chemically to the film. Because I have never had any issues checking my squeegee and gently squeegeeing my films.
I will not say this is impossible as I am not a photo-chemistry expert but if there was a risk of this combination ie. DDX, Kodak Stop, Ilford Fixer and wetting agent doing something to the film chemically of the kind you experienced, then in the many years of people using this combination this would have happened a lot and would be a disaster waiting to happen each time, wouldn't it
Each part of the combination is completely compatible with the other so really I suppose that I am saying the answer is No, it is not possible
However you are free to believe whatever you believe in terms of the combination being a possible scratch producing effect or any other kind of damage producing effect on the negatives
pentaxuser