I am a graduate student in your field, and agree with the response by fuzzylogician. If you decided not to report this person, you likely did the right thing. Frankly, this is such a competitive field with an enormous amount of over saturation that you really do need to show off some unique and valuable skill-set in order to get into the US graduate schools. With that in mind, the committee member did you a favor by suggesting you broaden your horizons, because that is what you would need to be a competitive candidate on your next round of applications.
The reality is that the committee member's behavior would not be considered at all inappropriate by the majority of those currently in this field, in the US. While it stings to receive feedback like that (especially when you interpret it as dismissive), you should know that reporting this committee member will result in zero admonishments for them, as the program almost definitely backs up what they are saying.
With how competitive this field is (you know it just gets more competitive after grad school, right?) you will need to get used to both rejection and pitching yourself/ your skills to different people, so take this as an opportunity to think about how you want to promote yourself. For example, you are proud of your work on non-fine art objects, right? So make sure to talk about how and why those objects & experiences are important, not just to you but also in the broader sense (important to cultural stakeholders, etc). Keep going, pursuing the work you are the most passionate about, and remember that that there really are multiple paths to your end goal.
I'm responding super-late, since I just saw this, but I hope it is in some way helpful. There are very few of us on these forums! I am curious to know what happened, if you reported them or not, and what the result was.