A hair trigger is unsuitable for combat use because of the "errybody be muzzle sweeping errybody up in here" nature of combat.

Those two uses are 99.99% of what the air force needs its pistols to do.

They could give it better tolerances so it has a "good trigger" without "hair trigger" but that will cost a lot of money. Or they could give it an absurd trigger pull like duty guns had in the "good old days" but that will cost just as much money for equivalent results because you'll need to train the force more to get the same accuracy of fire.

Additionally, with the fairly sloppy nature of these guns and the fundamental nature of how handguns work, it's not unforeseeable that they do get clapped out to the point of just going off if you bump the slide right as they age since they're so close to that as is.

Considering how many people need to be trained/equipped and how often the air force fires sidearms in "real" situations both of these solutions are way, way, way more expensive than a few bodies.