Maybe they had just too many accidents and close shaves and now decided to make de-icing sort of compulsory. Clearly, most crews will have enough common sense and self preservance to de-ice in any case of the slightest doubts, never the less in recent years there have been too many who did not. So I reckon, while it is a measure which rightly offends those who always did the right thing in this regard, it might safe a few others from their own stinginess or stupidity.