Nothing political at all. Icing or the possibilities of it need to be respected in ANY type.
Consider the tail stall due to icing - happened to more than one jetstream in the past. So no, icing is not just a problem with the ATR.
Also bear in mind that the ATR that crahed in Illinois was HOLDING with flap 15 in FREEZING RAIN and DRIZZLE - never a good thing to be doing. And I believe the skipper was not in his seat when the first control problems became apparent, leaving it all down to a fairly inexperienced FO to deal with.