Why are you raising irrelevant points?Trophy and other things don't really work well. In the heat of the battle, forest and dust, it is very difficult to block enemy ATGM. It will be a waste of resources
Don't you know its only indigenous platforms that must work perfectly well under all conditions.
Its all right though when t-90s electronics conk off because its too hot, su-30s have sub par utilisation or almost every single fighter jet coming into the IAF sees problems with radar / avionics which only get fixed over time.