Do you have reason to believe that is intentional (i.e. poisoned) versus it being an artifact of stock image site tagging systems and social pressure to avoid treating those subjects differently (i.e. biased)?
Bias certainly, but I wouldn’t even assume social pressure necessarily. The bias in the search can easily be a result of an existing real-world bias.
White has long been the default assumption for many of these tagging systems, so I’d not be surprised if many pictures of white women are just tagged as “happy woman”. Just as automatic soap dispensers that don’t work for dark skinned people.