Does it matter? Honestly, it's open source software. Though yes, he/they are important due to writing the original code, but what we do with it, is what ultimately matters.
Just because it's created, doesn't mean it'll be used the way the creator intended. Much like I have a hard time going over someone's else code if they wrote it too awkwardly, or not like me. Because I have my own vision. If I can do it without rewriting the entire system, I have to `tack` it on. Once you tack something on, you're exceeding the original programming. Are you following still?
Our mother's gave birth to us, not always do we end up following their desires and wishes. We become our own people. Bitcoin will become something more, more than Satoshi.
I believe that to be the purpose of this, giving birth, then orphaning your child, to see what happens.
Bitcoin has also given birth to more coins, coins might mate in the future, have their own babies, we'll never know what the result will be, because it's a new form of life. I believe they/he wanted to see what it would be like to be god/a true creator, having done it the way he/they did. The dark and mysterious, and undeniable truth is in the result, not the creator.
I think you all think too much about conspiracy, and not enough about creating.