We don’t share the same brain so why the hell would we have the same innovative ideas?
No we do not. And no one person “designs” a manufactured product. Critique is part and parcel to the process of industrial design, engineering, and many other fields my friend. Get used to it. It is a constructive process that helps ferret out problems;consider it “feedback” and use it.
A bit of advice. If you take all of this as a personal attack, you’re doomed. And if you can’t “defend” your concepts to the group/management they will not make it through to the final product. As the old saying goes, “If you can’t take the heat, you’d better stay out of the kitchen.”