Do stereotypes serve any positive function?
Stereotypes are associated with a variety of different negative outcomes, but they also serve some useful functions. Primary among these is that they serve as heuristics in various decision-making contexts, and, in so doing, free up our thinking for other things. Yes, such heuristics can get us in trouble. But, to the extent that our understanding of group differences is accurate and we realize that group differences cannot be generalized to individual members, stereotypes can help us navigate our social environment.
That was/is precisely my point.