This ruling does prevent people like Lia Thompson from competing.
However, I have a concern about this portion of the rules:
"The new eligibility policy for FINA competitions states that male-to-female transgender athletes are eligible to compete only if "they can establish to FINA’s comfortable satisfaction that
they have not experienced any part of male puberty beyond Tanner Stage 2 (of puberty) or before age 12, whichever is later"...
Swimmers who have had "male puberty suppressed beginning at Tanner Stage 2 or before age 12, whichever is later, and they have since continuously maintained their testosterone levels in serum (or plasma) below 2.5 nmol/L." are also allowed to compete in women's races."
https://www.yahoo.com/news/swimming-fina-votes-restrict-transgender-151028626.html
This suggests that the organization accepts pre-pubescent transition "therapies" qualifying a youth as "female." This also gives parents, and those in the transition "business model" of therapists, counselors, endocrinologists, and surgeons, not to mention pharmaceutical companies a profit motive to encourage this "transitioning.
The problem I have always had with this viewpoint is that we don't trust children under 16 to make any "life-changing decisions" because we consider them too immature and thus incapable of such choices. Hell, we even have many who would argue for this also arguing that 18 year old's are not mature enough to own a gun, suggesting a delay until at least 21, and for some preferably later. Yet they argue a child "knows" if he/she was not born the "right sex?"
So who is really protecting the children?
The delusional parents who seek social praise in what I consider another "Munchausen's by proxy" harming of children? Therapists who argue this nonsense? The Endocrinologists and Surgeons opening up a new source of practice profits? The Pharmaceutical industry?
Those of us who oppose this crap at least until the person is a legal adult?