@merrymouse
Being trans is about embracing gender conformity, rejecting sex based reality and 'living as' the gender stereotypes of the opposite sex.
That certainly seems to be the Mermaids approach, but the Stonewall definition of trans is so large that it can cover pretty much anyone including people who are completely gender conforming.
The main goal seems to be to establish a right to be affirmed by society, because what could be worse than a lack of status and respect? To be fair, I think increased visibility and a change in public perception did lead to many of Stonewall's early successes.
The problem is that the model is limited and doesn't work when you try to apply it more widely. In particular it can't cope with any conflict of rights.
This isn't exactally a response to your comment, but t made me think of something I've been wondering about in a disconnected way.
Is there a limit to the degree which an organisation can represent a group, or claim to represent the interests of a group, and speak on their behalf? And if so, what is it, and how should we approach that?
Clearly there is a real split in terms of the LGB community on how to manage trans issues. But there are other examples, there are disagreements about things like surrogacy, even how to handle birth certificate of adopted kids or donor conceived children. There was a group, a minority but with a thought out opinion, who didn't think same-sex marriage was a great idea.
You see somethig similar with BLM where there is a claim that their views or approach race questions should be taken as representing the black community, or even as a kind generalised anti-racism. Yet there are plenty of differing viewpoints within the black community, even in the US, about defunding the police, about identity politics, about things like affirmative action programs.
It seems like when one organisation starts to be seen as THE group representing a constituency, it can actually end up silencing a fair number of people within that community who have a different perspective than the majority over some issue. And it ends up flattening the public discourse.