Non-binary people who identify as lesbians, why?

Like, I’m maybe non-binary myself so this isn’t a troll question I’m genuinely curious. i thought the whole point of non-binary is that you’re not in the binary so why use a binary label to describe yourself?

Like, even if you want to define lesbians as “women and non-binary people attracted to women and non-binary people” isn’t that still reinforcing the binary by aligning yourself more with one binary gender?