I mean, Neva's story was MEANT to be a self-indulgent piece of writing, and it was instrumental in a personal awakening, so it did its job.
"me" being found in the rest of my characters is simply a function of writing people doing things the only way I know how to do things. It's normal, I think, for my characters to reflect my own biases, because well... I'm the one writing them.
I don't see them as "self-inserts" really as much as hindsight making me realise "oh shit, the thing I just wrote? That's how I feel, too."