Because this illustrates the point that there wouldn't suddenly need to be an avalanche of extra medals produced, as you suggested a couple of replies ago. So unless you have some evidence you're not sharing, there's no reason to believe that there's suddenly need to be a load more medals produced.
And more to the point, so what if there were?! So what if more trans people competed in the Olympics? Why exactly is that an issue? I'm not trying to stop trans people competing in sports, just trying to propose ways they can do so that are fair to women.