To be fair the number of deaths - though very sad - are very small against the total number of people who walk.
The folk in SJPP not only know the area they will know the latest weather forecasts.
Those who are seasoned at walking the Pyernees are consistent in saying that the Nepoleon is not safe for most of the winter.
I agree that shelters will simply cause a false sense of security.
A member of the mountain rescue team in the Lake District told me that he would ban mobile phones on the hills. People think, well I can always phone for help and it leads them to set off when once they would not have dared to do so.
The shelters would only encourage the same behaviour.
I also suspect that at first there would be a rush of, oh, I must support these shelters, then the enthusiasm will tail off and the shelters will fall into disrepair and when people need them they will be useless.
So I vote No.