Because you cannot reasonably predict if and for how long times of peace are going to last, and if they suddenly stop, you're in top 10 contributors to fucking up the defense position. Sure it's assumed that espionage exists and that leaks will happen, but if some aggressive "They" come for you and yours and have a very easy time because you specifically have done all the recon for them, you're going to realize just how fucking stupid of you it has been.

There are other areas of government you can, and should put a pressure on, but jeopardizing one's own defense is the most brain damaged way to go about it.

I would surely make a fuss if open/public/declassified information sources point at egregious inefficiencies of defense. I want more killer robodogs like they had in that Black Mirror episode, powerful and resiliend mine removal equipment, and swarms of inexpensive lethal and recon drones with dozens of lethal heavy drones to follow them please, not some swindle like a fence painted for $500k or something to that tune. I'm ok with many halfway failed killer robodog projects, though.