The poll is bad. There is no way on god’s green earth that the older you are, the more accepting you are of interracial couples (at least in the US). It’s inconsistent with similar polls as as well just obvious common knowledge. It would be like seeing a poll among Americans that showed the older you were, the more likely it is you are cool with socialism.

Now what would be an interesting study would be to see the gap between what people say about their feelings on interracial couples, and what they actually think. I suspect there’s a significant gap but idk.