The iof infantry are cowards who don't have the stomach for genocide

I think it's less that, and more that the iof is actually quite incompetent militarily because they're actually just a colonial police force with way too much fancy gear. Can't find it now but some guy on r/TrueAnon had a good write up about how when the US did joint operations with the iof the US officers kept getting pissed off at iof soldiers doing tactically stupid cowboy bullshit with expensive military equipment. As cowboy as the US military itself can be it seems even the iof were too much for them.