Proportionately children caught up in it are more likely to be white and perhaps with a skew to middle class but they also tend to be the more vocal cohort and with family and friends who are more supportive/vocal.
That's key.
The 'trans kids deserve better' group are, for example, obviously functional and resourced enough to run a website (with a data protection notice, even), have a basic understanding of how to run crowdfunders, organise 'actions', disseminate to the media, etc. This doesn't mean they aren't also vulnerable, have trauma histories, etc.
But children who don't have the access to resources, networks, and who perhaps have less self confidence in appealing for them due to socio-economic factors will not be the ones we see releasing insects at lesbian meetings, talking to media, being featured in BBC vox pops, etc.
As ever, class issues are going to affect visibility.
[sorry, responded to wrong post!]