As long as you're not hacking to get your shinies, I don't care. What I don't like is my work being undermined. I did RNG abuse in Gen V, mainly for others that weren't able to do it. It's honestly a huge joy to send people their requested Pokemon for free, might I add. It makes them happy, and it makes me happy. I'm glad I could help them get something they wanted. And yes, I'm going to clone it. I'm not gonna RNG a new one every time it's requested, plus I can add it to my stock for other people to make offers on. It's a good cycle.
To paraphrase an old saying, if you can't take the cloning, get out of the Trade Corner.