Yes, this is very risky, even under the best conditions.
Multiple helicopters attempting to pluck a few pax at a time off of a pitching and rolling cruise ship with hazards galore in rough seas and high winds. The decision to evacuate this way means that the alternatives were even more risky.
If you look at the track of the ship, it was evident that they were about to founder on the rocks, with high winds and seas. They would have sunk for sure.
Temperature 42.8 deg F. I’d hate to have to go in the water at that temperature.