I'll give it a shot.
Not only are "trans-women" truly women....they're the only women.
The only true women are biologically male who identify as women and only true men are biologically women who identify as men.
(I tried to give a rationale for it, but the more I tried to come up with a rationale, the more it started to sound like something a leftist would actually believe because I started invoking words like "Cisgender" and then realized just leaving that statement as is, is more sufficient and crazy sounding than explaining it)
Nope. I can actually give you the leftist argument on this.
Like with a lot of leftism, it's all wrapped up in identity politics. Remember, these people can't tell you what a "woman" even is, so of course it could be only trannies. A "woman" has no real basis in reality, and is an identity. Also, like with a lot of leftism, it has to do with "lived experience" and victimhood.
What is a woman? A woman is someone who experiences discrimination, of course! Who experiences the most discrimination? Transwomen™! Therefore, Transwomen™ actually experience more of the Female Experience than those evil cis women, who grew up in their cis privilege, and thus cannot truly experience the full experience of discrimination...and thus Transwomen™ are actually the real and only true women.
Brilliant!
I...I didn't make it up. *sob*
That is the leftist Reddit tranny talking point.
I'm telling you, your challenge is impossible, because there's nothing so awful they won't cheer it on.
Ah yeah, my bad, I read the first part of your post, and I'm so ADHD right now that as I was reading the second part of your post, my brain forgot the context like I was a goldfish with ten second memory and thought I was reading a scenario.