I'm ok with speaking out against breast binding. It's self harm.
But yes, I agree that young transmen are often adopting that persona as part of their grappling with self acceptance and do still consider themselves to be lesbians, or part of the lesbian demographic. Same with young gay women identifying as non binary. I know they're lesbian women, you know they're lesbian woman, but if the aim is to reach out and connect then you have to understand who you're trying to reach. If it's a demographic that has embraced concepts like non-binary lesbian or trans masc, then I do think that grapplibg with that is important, and not just from a blunt 'It's wrong, and you should do this instead'.
Overall, I think it's great, and I'm only saying this because I want it to have the fullest and best impact possible. And in context, it's a small critique, really. The site is lovely.