I think perhaps the problem is with you. I believe you said "Below -40 degrees C, ice does not form anywhere on the fuselage or engine". Someone could misinterpret with unfortunate consequences.
The first line in the Boeing Aero magazine says "Since 1990, there have been at least 100 jet engine power-loss events on both commuter and large transport airplanes, mostly at altitudes higher than 22,000 feet, the highest altitude where airframe icing is expected to exist.". Some have been below -40. Then it goes on to explain the ice crystal phenomenon.
The Beechjet appears to be particularly susceptible.
I suggest you read and then realize that it is a strength to be able to admit when you are wrong.