My point is that you can’t reverse all the advantages of the years of previous testosterone (i.e. male puberty) just by cutting today‘s testosterone levels. You can make that person perform worse than other males, sure, but it’s not enough to reach a level playing field with females. There may be exceptions for specific sports - I’m talking about the general case, which is what we base policies on.

In general you also can’t give a female athlete sufficient testosterone to counteract the absence of male puberty and make them competitive with men. You can make them better than non-doping women, sure, but it’s not enough to reach the level of post puberty males, and the more you give the worse the impact on their health. The GDR already ran that experiment.