Nuts? Maybe,but those airplanes have to establish a "Demostrated Crosswind Component" before they can be certified by the FAA - ref 14 CFR 25.237 (a).
Basically this means that an airplane manufacturer has to establish a minimum "Demostrated" crosswind speed that it shown during certification that the airplane can safety land in. It's not a "maximum" cross wind speed and a pilot is not limited to abide to it.
In summary, the decision to land in a crosswind is left up to the Pilot In Command.
Looks like some very good piloting here.