I agree that dismantling all forms of gender based control/ oppression/ hierarchy/ violence is good thing as is accommodating diversity.
This issue is who defines the oppression? For centuries, women have fought for our rights as a social group with shared characteristics, experiences, and they derive from - but are not limited to - our biological specificity: we are biological females, not biological males.
So our oppression is what we know it to be: based on our sex.
It is not for members of the male sex - whether they are trans or not - to tell us we may or may not organise together and support each other and be entitled to our own spaces.
It is not for members of the male sex - whether they are trans or not - to insist that they are us and share our oppression - they are not, and they do not
That is the essential conflict between the rights of women and girls and trans people - the right of women to our own identity.
Some men respect this. James Connolly, for instance, writing about
the efforts of those women who, feeling on their souls and bodies the fetters of the ages, have arisen to strike them off...
...cheer all the louder if in its hatred of thraldom and passion for freedom the women’s army forges ahead of the militant army of Labour.
...
None so fitted to break the chains as they who wear them, none so well equipped to decide what is a fetter.
[The James Connolly Reader by Shaun Harkin]
We are deciding what is a fetter, not men, and not men who identify as women.