DK FCI suggests...
I have absolutely no idea what might have motivated him to start a thread like this.
Perhaps he should read Captain Thaines story "The Munich Air Disaster" which took place at at time when the effects of slush on take-off performance and the aerodynamics of a snow covered wing were not fully understood. We now understand so much more, and have the laid down procedures to cope with such weather conditions.
We have one professional pilot (the airline doesn't matter) who was appalled by the actions of another that day at Boston such that he started this thread.
I applaud him for starting the debate. It might just save a life one day.