I identified as non binary for a while. I had severe body dysmorphia and was dealing with a traumatic childhood rearing its head. Somewhere along the way this translated into gender dysphoria in my head. I hated hearing myself referred to with "she" and "her", but felt equally repulsed by "he" and "him". They and them felt good. I hated my body and wore a binder.
At no point was it anything to do with stereotypes or gendered souls or anything like that. I know mumsnet users have very strong views on this, but they oversimplify the matter and think it's all about feeling special and wanting attention. I wanted eyes off me at all costs.
Eventually my mental health improved; I'm female and comfortable being called "she" again, got rid of my binders etc. I changed my name, but I don't regret that.
It's a weird middle ground. Trans activists tell you that you never really felt what you know you felt and you were just pretending; anti trans activists want you to be another example of a detransitioner and fight alongside them. I have friends who are trans, I have friends who are GC. I acknowledge that amongst the pretenders and the ones who want to feel special and the attention seekers there are people who are working through mental health situations and, given time, the phase will pass. I'm focusing on my mental health and my 'journey', not getting involved.
I do have a question; one of the things I've seen as an argument against the "live and let live" position is the compelled speech of pronouns. Where do names stand in that? If a trans person changes their name, is it compelled speech? Meanwhile I changed my name as part of the healing process, for separation from trauma - is that also compelled speech? It's something I've wondered a lot lately.