There is building evidence that trans athletes are not advantaged, and are even disadvantaged in specific areas. In the first 3 months of transition estrogen therapy, haemoglobin levels (so the ability to carry oxygen) fall to female levels. This means that trans women athletes can't produce more energy than cis women, and in fact, if the trans person has larger muscle mass, some of the oxygen is taken to keep the extra muscle alive, making the production of energy less efficient than cis women.
But this mostly affects sustained aerobic activities, meaning that in activities involving short bursts of strength, trans people may have an advantage (as indicated in the study posted). This indicates that a case by case assessment should be adopted to qualify athletes, and this should be applied to all athletes, not just trans athletes.
Hugs,
Allie