You did. You really did, you told him he wasn't good enough to work on the level. You publicly humiliated him in front of some of the "best" editors in the community, in fact. That's why he independently made his own version from the same concept art, to show that he could really do it.
You invited me to the JK:R level design meeting because Sith 2.
When you discussed your project management strategy - handing off the level to different people - I immediately, politely, and privately told you it was a bad idea and why it was a bad idea. You didn't listen.
You also announced that you were essentially abdicating from your leadership responsibilities, delegating those to halucid. I immediately, politely, and privately told you it was a bad idea. You didn't listen.
You also publicly fired xzero for not being good enough. I immediately, politely, and privately told you it was a bad idea. You didn't listen.
And I'm absolutely positive that other people were telling you the same things, but you didn't listen. No, you don't get to use "but nobody told meeeee" as an excuse. dwi.
There is nothing wrong with being weak at 3D modeling. If you had put in the time and effort, you would have surely become good at it. Nobody criticizes you for being bad at modelling. And yes, we do sometimes chuckle at your one contribution to JK:R is the weakest model in the entire pack, but you're missing the point.
Once upon a time, Shred mentioned behind your back (without even being cruel or anything) all of the problems he had trying to get your repeater rifle working in game. Because he didn't think he could talk to you about your work. And even after he quit your project and finished the models on his own, he was still so worried about denting your ego that he used your model, warts and all. I mean, the whole thing there is that shred, the guy who was time and effort-wise effectively bankrolling your entire project, couldn't work with you.
I tried to help you and you didn't listen. I tried, I tried, I tried. Even after, I kept listening to your other projects and other ideas, and still tried to help you. Now you are a case study.