But then you get the same argument from the miltary bean counters - TCAS costs money and reduces payload for no military benefit - the fact that it might alert FJ to other air users is ignored since there have been few midairs (fortunately) so there is no cost benefit to the military.
HUMS and other blackboxes are already on Chinooks and are even being retrofitted to Sea King - but only because the military sees a benefit in engineering savings from doing so.
So it really is not much different on the other side of the fence since cost determines just about everything - it doesn't stop people having a healthy interest in flight safety.
However if the military really did have an unlimited budget for FS issues (which it most certainly does not) we would have had anticipators fitted to the Puma when the first board of inquiry recommended it!