Pace
A wet prop is of vital importance especially in a low powered aircraft. The loss of thrust in an iced up prop is a major factor in icing accidents.
Forgive the frustration, but I think we have grasped that much. A wet prop. may well save you in icing until you can escape the conditions but, (and this was the point I made) it is not a lot of help when the ice starts to rapidly accumulate elsewhere.
I may be wrong but I do not believe the Cirrus is approved for flying in icing conditions.
You are wrong.
Cirrus now have full approval for their system albiet in the variant now fitted. As I said, there are a number of differences between the approved package and the non approved package - the ability to select a higher flow rate, a larger reservoir, a contents guage, and a screen spray bar.
I have not used the approved system on the Cirrus, only the non approved variant, but the Cirrus approved system is identical to that fitted to the 42 which I have also used. You would not want to be in the type of icing conditions which required the use of full flow for long whatever system you had, personally I can tell very little difference between the spray bar and the prop. slinger in actually use, and while a contents guage is more than useful, we seem to manage with contents guages that dont work on another vital components of aircraft without too many problems! The smaller reservoir on the non approved version is an issue, but otherwise I suspect the non approved system works very nearly as well in the type of conditions that you owuld be prepared to accept - not that I am recommending using any non approved system for intentional ice encounter. I suspect the size of the reservoir was the single most limiting factor between the two systems.
Edited to add:
Difficult to tell whether the aircraft had the tell tale titanium strips from the photo. In any event I suspect if icing had been the only cause of this accident the chute would have been deployed - but that is purely speculation, which I am against.
In general the chance of ending up on a high peek surrounded by low terrain following a loss of control due to ice or for any other reason is statistically remote compared with CFIT.