Fendant what are you talking about you wouldnt trust the flight crew?? But would relay a message to the cabin crew??
What would you do if you were then told it was in limits/in accordance with rules etc?? The issue is the average slf doesnt have the technical training to know what they are talking about with regards deicing/anti icing. Reading pprune and fliying on your ms flightsim doesnt make you a pilot or expert on the subject.
The guys/gals up front know what they are doing following tens of thousands of pounds and hours worth of training, it wasnt wasted and to assume you know better when lacking any of this is arrogant and not the way the industry works.
Trust the professionals its what they're paid and trained for. Do not tar everyone with the same brush, especially one that may not be correct!