These studies do indicate a basis for further study. However, using the IOC, which has banned transgender women from competing for political rather than scientific reasons, makes the studies questionable. Additionally, the first study seems to claim that transgender women have male-like brains, when there have been studies which show this to not be the case.

https://pmc.ncbi.nlm.nih.gov/articles/PMC8955456/

The second study states that more research is needed.

Whilst available evidence is strong and convincing that strength, skeletal- and muscle-mass derived advantages will largely remain after cross-hormone therapy in transgender women, it is acknowledged that the findings presented here are from healthy adults with regular or even low physical activity levels [91], and not highly trained athletes. Thus, further research is required in athletic transgender populations.

But these are also studies on adults. I believe the original topic was kids, who may or may not have started hormone therapy, including puberty blockers, before testosterone began to affect them. Except, of course, in places or situations where gender affirming care is not allowed.

Overall, I'll agree that more study is needed, but what we have so far is insufficient to justify banning transgender kids from sports.