"The problem for Thomas and other trans women athletes is not trans bodies but rather the way we gender-segregate sports"
If by gender, Susan means anything to do with identity rather than a polite way of saying biological sex then she's wrong at her very first premise. We have never divided sports according to identity. I share no identity with most other women. We just have our bodies in common and the social overlay which people put onto that.
We can define biological sex. Males with a DSD which make them appear female to some at birth are still males.
"We do a lot of things to maintain the illusion of difference. Think about it for a minute. If women cut their hair the same way as men, wore “men’s” clothes, and didn’t shave their legs and underarms, wear makeup, or pluck their eyebrows, they wouldn’t look nearly as different from men as they do."
Well, Susan might but my hair is cut the same as many men, I often wear clothes which are effectively the same style as mens, just cut for people who have wider pelvises and other women's proportions, I often don't shave, usually don't wear make up and still look different from men in all important ways. Susan seems very old fashioned.
"What if we imagined sports in other ways? What if instead of focusing on gender as the dividing line we used other physical traits? Wrestling already does this. People who weigh 120 pounds don’t wrestle against people who weigh 200 pounds. What if we imagined dividing competition along lines of body size?"
I don't know Susan's background but she seems very much like a scientifically illiterate arts grad. Body size does not predict speed, strength etc. A man and a woman of the same height are very different beings.
"What if we rethought team sports so women and men play together? We already have mixed doubles in tennis and pickleball"
Yes but for that to work, we'd still need to know who's a man and who's a woman - and Lia Thomas would still want people to pretend Lia is a woman and would still have no regard for the women Lia has pushed aside.
As anti-women articles go, this is one of the silliest I've ever seen.