Probably the pilots should have ordered a deicing in the first place but I wonder if the management or the captain ever asked the cabin crew if he/she has any form of technical knowledge/ training to substantiate his/her call that there was ice on the wing? Can he/she differentiate rime ice, clear ice, hoar froze etc?
As the captain, we are all trained to manage this sort of risk (with the copilot support) and make the appropriate judgement, the last thing I need is a cabin crew to second guess my decision at the takeoff position. Of course, plus the sh!t that the management throw at us after that.