Most hacking comes down to entitlement. Anyone who knows about IVs and EVs and how to hack them is already on a site that has a netbattle program. And those communities are populated, by like minded people who are serious about competitive battling.
Getting good IV's is impossible? Bull, it takes a bit of set up the first time but it honestly takes me longer to design the team than get good IVs. The breeding system is pretty simple and you can pass down 3 IVs to the child. It takes me a few hours to breed a team assuming I've already caught the parents. And even then there's still no reason to hack the cart, again battle simulators.
"I want even rares." No argument here, makes sense to me.
At the end of the day it's not a big deal so long as everything is still legit(ie. no skills they can't learn, impossible IVs or EVs etc). It would just be nice if battling on the cart was with actual trained pokemon and not hacked ones.