You could maybe argue that there was a hint at a pro-Trans story there. She falls for a guy, but the person she thinks she fell for isn't actually the person she thought, and in the end it's a girl. But, she decides not to continue the relationship after that final twist. And it's also one episode in a very long series and Crusher is clearly straight... even if the Trill is maybe bisexual, or maybe pansexual.