The development comes after a presentation to the International Olympic Committee by its medical chief, which highlighted the potential physical advantages of competing in women's sport after being born male.
I guess this is on me, for assuming you'd comprehend the article. I'll explain it to you though!
Sex is not a spectrum. Sex is a binary defined by the size of gametes your body is organized around producing. Sex phenotypes and genotypes are a spectrum, and Snopes is hoping that you're too ignorant to understand that, which regrettably you are. Which is OK! Everyone's ignorant of lots of stuff, this is a great time to learn something. When Snopes says things like "In other words, there are several ways to define gender", you can completely ignore that, because it's irrelevant to participation in women's sports. There is no evidence that Khelif is female, and this entire matter could be put to rest with a simple, non-invasive, cheap cheek swab that would prove to everyone that Khelif is in fact female. It is good that the IOC will implement sex testing and put this matter to rest so we can focus on more important things.
Gender is a spectrum though! It's a reflection of how you live in your body and that's great! Except in sports, it makes a difference if you've gone through male puberty. Khelif has gone through male puberty on account of being male, which is unfair to female competitors. Trans people should get to compete in sports! But trans women that have gone through male puberty and males with DSDs (aka intersex, which is a confusing term for this reason) should compete in open/men's leagues because of innate biological advantage. The IOC is doing this because they followed the scientific evidence.