Authenticity is never sinful. I may be wrong, foolish, or selfish about the specifics of my transition, but that is not sin, it is human. If I live an authentic and gentle life, how that is perceived by others is none of my business. My business is to be real, respectful, and forgiving. It is not my role to be an authority or educator, but it is my obligation to be an ambassador, and to be willing to educate where and when I can.
That said be safe first, not everyone out there is spiritually fit. For me to turn the other cheek spiritually is a blessing, but if doing so puts me or others in harms way it profits no one. We are a community of people who are looking to live as we truly are, sans the artifice of societal expectation, and the constraints of dysphoria. I for one did not choose to be conflicted and in pain because I felt required to live and perform as someone I was not.
It (that life) led to near self destruction, and the ruin of more than one sweet relationship. Living in a way that puts barriers between me and God is sin. This is redemption.
Julie