I've been wearing coated prescription lenses for at least 30 years and always clean them with dish detergent or lens cleaner. I did have one pair that the coating started to de-laminate but not the way yours did. They just had bad coating and were replaced.

If this only happened after you started using the hand soap, I would say that was the cause. I'd send them to Oakley and see if they will repair/replace. Otherwise get something else and be more careful about how you clean them.