Yes, agreed. I feel like I way too late to the mousseline game as the current mousselines are all very delicate in comparison to earlier years or there is a lack of quality control.
I did return the mousseline. I have an older mousseline purchased from Paris sale that I wear regularly and after reading your comment, I went to inspect the hems and there aren't any holes on it. We all have different expectations on new silks and we'll just have to disagree on each others' definition of defect. (I do understand that the cause of the holes are from tension of hemming and while I can expect holes to appear with wear, I most certainly do not expect them on brand new unused silks from the warehouse.)