she's selling a gambling product to the kind of older men that also buy pornography and/or go to strip clubs. the demographic that is being targeted tends to like thin blonde women with large breasts, and tends to have little to no interest in women's sports.
the typical target audience for the ad would be perfectly represented by the now historical television character of al bundy.
she doesn't have a responsibility to represent female athletes and the suggestion that she does isn't fair to her or what her job is, here. the criticism from female athletes has no relevance whatsoever to her job as a model in the ad and is in truth outright absurd.