I seem to recall that the reason the A-1 was adopted by the USAF in Vietnam was that the fast whizzy pointy things were not always the right tool for the job, and that was in a high risk environment with regard to enemy fighters. With that in mind it is hardly surprising that in an environment with no enemy aircraft and threat from MANPADs only that slower, cheaper aircraft are being looked on with favour.
And though my earlier post was very much tongue in cheek, why would a Bronco be unacceptable in anti-ISIS ops while an Apache would not? Or has anyone else noticed how, over the last few decades the attack helicopter has grown in provenance at the same time that slow COIN aircraft have waned? Perhaps this is showing that it is the attack helicopter that is the dead end concept, not the slow moving fixed wing COIN aircraft?