Trans athletes make great gains, yet resentment still flares

So hormone treatment/modification is no longer required? This used to be a debatable topic. Now it's just plain stupid.

https://www.nbcnews.com/nbc-out/out...sues-new-guidelines-transgender-athl-rcna5775
No. That article is pretty misleading. What the IOC has done is changed their guidance, so they're not setting rules at the IOC level; the rules are actually set at the individual sport federation level, and can include hormone, testosterone, etc., requirements as justified.

"The IOC recognises that it must be within the remit of each sport and its governing body to determine how an athlete may be at a disproportionate advantage compared with their peers, taking into consideration the nature of each sport," reads the framework.​
"The IOC is therefore not in a position to issue regulations that define eligibility criteria for every sport, discipline or event across the very different national jurisdictions and sport systems."​

From a better article on it: https://www.bbc.co.uk/sport/olympics/59312313