lol 1) it's the internet. extrapolating it onto some larger group is silly being that it's a self selecting process (most people that take no issue with interraccial couples would even feel a need to comment on the point)This alone is unsurprising—what is remarkable is that despite the fact that interracial couples and multiracial children continue to see huge increases in the population, advertisement agencies and the companies that hire them aren’t being more aggressive in catering to that demographic. Are they afraid of offending that small group of Americans who may feel adamantly enough about “race-mixing” to boycott their products?
2) It's not exactly uniform in the sense other demographics are. You can have a white husband and a asian wife, etc. Probably complicating "appeals" to them
3) While they might be growing, they still only make up 10% of couples and likely represent an even smaller number of the population as a whole. So small and difficult to cater to is likely more of a driving factor than racism