You are just envious jerk.
Every thing you "designed" is based on someone else ideas.
Yet you not only claim the authorship, but you also restricting usage right for some cases.
No one demanded anything, people just asked.
To refuse the request is authors right.
I may not like this right, but regardless of my liking the right is there.
I claim my authorship on the model and on the CAD files because I made it.
I don't claim authorship of the design. I explicitly stated multiple times on whose idea this thing is based on.
As the idea was licensed on terms of CC-BY-3.0 license, I have every right to do what I done.
So GTFO your envious self with such complaints please.