I don’t know that I will ever live to see that, because people are wired to notice differences from an early age. I’ve been stared at by babies in public places who seemed fascinated at seeing someone who didn’t look like the folks closest to them. How they’ll feel about those differences (and behave) depends on what they’re taught. While this discussion is about race, that can apply to many other physical characteristics.
@alahmnat posted a good one about what people see: