The Ishtar is pretty much the only HAC I ever see used for ratting/missions anymore. I’ve even seen them used for complex running before. Droneboats, in general, are pretty good for that kind of stuff. However, there’s a pretty good cost vs average tick ratio case for ratters to stick with the Vexor Navy Issue even if they can fly & afford an Ishtar. PVE Ishtars aren’t rare, but they definitely aren’t common.
So, I think your issue is that you’re looking at the wrong HACs for PVE stuff mate.
EDIT: For reference, a fully fit/skilled VNI costs about 100mil and gets around 12mil ticks while ratting, or 36mil isk per hour. Basically, if you can get in 4 hours of ratting in a VNI, you’ve paid it off. An Ishtar doesn’t do any more damage than a VNI, so there’s no real increase in your ratting ticks. It has slightly better drone tracking & speed and a better tank against kine/therm, which can help your drones get from rat to rat a bit faster and maybe allow you to take on stuff a VNI can’t tank. Is it really worth the 350-450+ mil to buy an Ishtar to do something the VNI does just as well, or are you planning to try running some of the bigger & riskier sites VNIs simply can’t tank? It’s really up to you to decide based on your situation. I know this doesn’t directly address your question about the minmatar hacs, but I hope the eternal debate of VNI vs Ishtar for pve helps you figure it out.