Claiming that being a femboy is necessarily partially kink is harmful. Would you say the same about other nonbinary people? Is being a tomboy driven by kink? Is being trans driven by kink?
I think you're telling on your own views more than you're explaining how the world works. Identity exists separate from sexuality, full stop. Unless you want to revoke all trans and nonbinary identities from aro/ace people too.
And just in case you're just talking about how people view femboys - who cares? Some people view the LGBTQ as child-rapists, and we don't care what they think. We tell them they're wrong and to respect us. Same here.