@JAPAB.....you said - Except that the qualifiers "haired" or "non-hairless" were needed. Those were the "cis"/"non trans" of this example. So not sure why you think this proves the point that such is not needed
Let's make it less abstract - The qualifiers you were providing related to biology/ genes and not psychological factors such as 'cis'. In the case of a plague that affected either women or transwomen, the key thing would be the biological differences not factors relating to how someone identifies.
So let's use the example of cervical cancer and the prevention of. Saying cervical screening is available for cis women is not accurate. Women, regardless of how they identify can get cervical cancer. Men, regardless of how they identify, or what cosmetic procedures they have undergone, can not because they do not have a cervix.
Providing the qualifier 'cis' would not be accurate as no matter how they identify, typically developing women can get cervical cancer. Therefore, if you were going to provide qualifiers you would need to say women - no matter how they identify - can get cervical cancer. Trans women can't.
What do you think the average person would think if they saw information leaflets/posters inviting 'women who have vaginas and cervixes' for screening? Or, 'all women but not transwomen'?
For me, the terms women and trans women are all that is needed. I know that for some people, considering trans women as a sub set of women, is not acceptable. I think you are doing transpeople a huge disservice by pushing an agenda that completely unnecessarily alienates a significant number of people.