alt Hacker NewsI think you're falling for Sticker Swap Fallacy. The goal is to have fair match-ups in sports. Gender and sex are two possible labels to use to assist with this, but they're imperfect enough that we probably ought to not use them as the primary differentiator.
https://www.lesswrong.com/posts/C7LcpRtrHiKJRoAEp/sticker-sh...
The solution is simple: class every sport like boxing.
Pick a sports-relevant metric and split into divisions. Some sports will naturally fall into gendered divisions, while others will have varying degrees of co-ed competition among competitors of similar ability.
The way out of this is not to pick a better scissor of sex or gender, it's to pick a better scissor of ability.