I mean it's hardly surprising, especially the army guys. At least the marines got exposure from numerous joint exercises with USMC, whether that be CARAT or RIMPAC. The only unit that I ever see rocking the dump pouch is KOPASKA, but presumably, that was also because it was under the leadership of gizmo aware Pak YesKill lol. In fact, I remember back in the OG Formil when SAKTI vest was first introduced there was a currently serving member that heavily against the idea, citing reasons such as the guys won't know how to properly use it because it isn't being taught in basic, velcro is noisy, and it's going to be uncomfortable when it's wet (from what I can remember).WHAAAA...?! I'm aware that our military brass are mostly old fashion old guard type, but they actually don't know about dump pouch? And I thought my privately bought & owned gears were bad. And, yet I had worn dump pouch, hydration bladder, NIR treated backpack, other PALS / MOLLE compatible pouches since around 2014
Although with that said, these are just anecdotal encounters, so take it with a grain of salt. Maybe another member here that has a closer working relationship with the army can chime in?