Calling someone with a DSD "an intersex" is just as dehumanizing and insulting as calling them the other stigmatizing slur you used earlier. Sheesh.
As for your claim that "there are some world sports federations that do ban intersex" athletes - that's total BS.
Banning people with DSDs from sports because they have DSDs would be immoral - and it's also clearly illegal under the laws that prevail in the places where the world's global governing bodies for sports are headquartered. No world sports governing body could get away with doing this.
Nearly all the governing bodies that set the rules for international sports competition around the world - such as the IOC, World Atheltics, FIFA, UCI, ITF, IWF, FIVB, World Aquatics, International Gymnastics Federation, International [Field] Hockey Federation, International Basketball Federation, and many more - are located in European countries which have strong laws that prohibit unfair discrimination against people on the grounds of a wide variety of personal characteristics including sex, genetic features, disabilities and various health conditions.
It's true that some/most sports governing bodies have rules in place that prohibit male DSD athletes with male genetics; intact, functioniong testes; male levels of T; and male androgen receptors in good working order from competing in the female category - or which allow them to compete in the female category only if they meet certain conditions.
But that doesn't mean these athletes - or DSD athletes generally - are banned from any sports.
Athletes with XY DSDs who have testes that pump out male levels of T and who've reaped the physical advantages that come from going through male puberty - like runner Caster Semenya and soccer/football Barbra Banda - have always been free to compete in the male/open category of their respective sports. Moreover, sports governing bodies like WA, FIFA and the IOC have created extremely generous and lenient rules for the express purpose of giving athletes with the sorts of male DSDs that Semenya and Banda have special allowances to make it possible for them to compete in the female category.
But again, the policies that say male athletes with a small number of DSDs must reduce the levels of testosterone their testes naturally produce in order to compete in the female category only apply to a small number of DSD conditions that affect male sex development.
People with any one of the approximately 35 other kinds of DSD conditions - including the ones that affect female sex development like classic CAH, MRKH and Turner syndrome - all can participate and compete in all sports under the same eligibility standards and rules that apply to everyone else.