No, they are not being "treated as they are sub human." They are being treated as human beings born with disorders of male sex development who are taking advantage of their rare, male-only medical conditions to compete in the wrong sex category - where they can easily trounce female athletes who are being denied a fair shot from the get-go.
They are being treated as human beings who have the intelligence to understand the information given to them by medical experts and their advisers, information which has been spelled out by WA and the Court of Arbitration for Sport: athletes with their particular kinds of disorders of male sex development have the same exact kinds and scale of unfair physical advantages over female athletes that males with normal sex development have.
They are being treated as human beings grown-up enough to know the fundamental differences between the two sexes, and with enough common sense to grasp why there are separate divisions for males and female in sports in the first place.
They are being treated as human beings with enough moral fibre basic human decency to know that the way they are behaving is unethical because it is patently unfair for anyone with male advantage to be competing in women's sports.
They are being treated as human beings who have the mental and emotional capacity, and enough regard for other human beings, to come to terms with the the fact that they were born with rare disorders of male sex development without taking it out on women.
They are being treated as human beings with enough "sportsmanship" to grasp that female athletes shouldn't be made to suffer and pay in order to compensate them for being born with partially undescended testes and anomalies of urogenital anatomy.
Other than their urogenital anatomy developing atypically during gestation in utero, there is nothing physically wrong with athletes like Seyni and Semenya. They are robustly healthy, in fact.
The people who are treating these athletes as "lesser" and are marginalizing them are those who believe that males who were born with their testes in a place other than the scrotal sac and without normally-developed penises should be shunted aside and cast out from the company and sports competition of boys and men because they can't accept that males with DSDs are bona fide members of the male sex who deserve to be treated as the equals of other males.
The people who are dehumanizing these athletes are the ones "othering" them by regarding them as deficient males and saying they should "run and play with the girls."