I don't quite care for hacking, even if it's "legitimate" hacking. Granted, as long as the individual doesn't affect me in any way, then I'm perfectly fine with it. I just don't want hacked pokemon in my game(unless I'm aware it's hacked, then I may just toss it up on the GTS for another pokemon), or to battle hackers.
Well, as long as the hacker didn't touch IVs or gave illegal moves, It wouldn't bother me too much to battle...maybe. I waste hours trying to get a pokemon with decent IVs, and someone just hacks it...upsets me they consider that legit.
I still agree with the point that I see it as a bit lazy. Legendary without other games I'll excuse...but trading shiny hacked pokemon always irked me. Every other pokemon, as long as you've seen it, you can snag off the GTS.
Honestly, it doesn't bother me that much though. Everyone has their own way to play a game, eh?
So you have a problem with hackers trading hacked pokemon, but have no problem doing so yourself? That's very hypocritical. And Like I said before, most hackers don't touch the IV's so it could easily be justified as legit.