In my experience of young people struggling with gender identity, in every case it's a current culture-driven coping strategy to deal with all the other issues they have - exoerience of racism, undiagnosed or diagnosed neurodiversity, trauma, general 'not fitting in', mental health difficulties of various types.
More support for children and young people suffering in those ways is welcome. If it has to come in a gender envelope, then in a way I'm sorry about that but it is also the current cultural expression of these issues and meets the children where they are.
The problem is when it ‘comes in a gender envelope’ too often those other problems are precisely not discussed and everything goes in to a big gender box, sealed and stamped.
Mermaids is also promoting the idea, through workshops for SEN, (which all GC are barred from), that trans is an inborn aspect of being autistic, rather than an identity an autistic person, a girl especially, might use to gain acceptance and attention at school, or might hide behind as an explanation to themselves for other difficulties. What if the Mermaids approach prevails in the sphere of SEN too?