So arguably, the easier it is to change your legal gender, the less of a problem gender-based affirmative action is.
Gender-based public sector affirmative action exists to counterbalance discrimination in the private sector. I would argue that becoming trans to undermine gender-AA is penny wise and pound foolish, unless you were already tending towards that inclination.
But what I’m seeing here is “I’m changing my gender but only for the purposes of gaming the system, then I expect you to recognize me as my original gender again”. And that’s on par with carrying a pair of crutches in your trunk so you can park in handicapped spaces.
You don’t really want to take on the burden of being recognized as a woman. You just want to pocket a benefit in the public sector and then go back to your privileged position in the private sector.