I suspect this is the same the world over. Individuals claim "expertise" in being trans and miraculously are given responsibility for advising on prisons policy, medical treatment of children, child safeguarding, teaching and pastoral care, parenting, girl guiding, social care including children in the care of the state, press ethics, government policy across the field, application of the law, health practice and policy and on and on.
The overreach would be funny if it wasn't so catastrophic in every field. Experienced knowledgeable professionals, parents, voluntary organisations are deskilled in favour of self absorbed narcissists expert only in looking in the mirror.