"turning"?? How about "yawing"? Although I suppose it is Airbus/Boeing...
I was surprised they said the effect was "dramatic" and may be limiting. Looking forward to reading comments from the "underslung" people...
As for "Max Demonstrated", in my view this is a major copout. An aeroplane must have a limiting crosswind based on the technique used to get it on the ground eg forward slip, the bank angle will be limiting. For the manufacturers to state only the max demonstrated crosswind and not call it a limit (which we all interpret it as) is pretty weak, I reckon.