When one tries to "reason" with an Extreme Left Democrat, remember you are dealing with a person who sincerely believes that a man can be a woman and a woman can be a man and that such a delusion should be encouraged, not discouraged.
Discouragement of the delusion is considered immoral and bigoted. Thus, our society has unnecessary dilemmas concerning bathrooms, athletic competition at all levels, and "pronoun" controversies subjecting ourselves to all manner of laws, rules, regulation, and more needless government control.
Like it or not, that's how it is. How to fit into this belief system?
Here is a suggestion to break the left's ridiculous gender ideology and denial of biological reality.
President Trump should make a declaration that he is identifying as a woman. The left will have to (1) admit the absurdity of their gender ideology or (2) accept and celebrate "Donna Trump" as the first woman President, thus beating Hillary, Liz Warren, Amy Klobuchar, Kamala Harris and Kirsten Gillibrand to the glorious goal of one of their "female firsts".
Furthermore, if he remains married to Melania he will also be the first gay president and the first lesbian president. He will also be the first lesbian president married to an immigrant! What a most glorious event for the Democrats to celebrate!