No, he's not wrong. It's definitely not a universal stance. My own belief (based on my sect) is that the depictions that the Prophet (PBUH) banned were done so to discourage idolatry among muslims (much more relevant at that time than now).

Beyond that, there is little to suggest that Islam explicitly forbids art depicting humans. In the case of prophets though, I think it is discouraged (by muslims) largely to prevent misattributing features or misrepresenting them (and of course, mockery as well).

I should add, there is probably a bit of miscommunication when people use the term "Islamic art". Some may mean art that does not violate Islamic principles (whatever those may be to them), others may take it to refer specifically to the typical aniconistic style of art that has now become synonymous with "Islamic art" (at least that's what I, admittedly, thought of in my previous comment), or perhaps art originating from muslim territories / made by muslims, etc.