The world know about bitcoin, so the world care to know who Satoshi is.
If Satoshi Nakamoto disappearance is not because of death, the world does not need to know who is or are Satoshi Nakamoto. It's unnecessary.
If Satoshi Nakamoto decided to abandon the community, stay in the dark, for goods, it is good if we let it be and stop digging to find real identity of Satoshi Nakamoto.
Hey, Satoshi Nakomoto did mistake.
1, 2, and 4 exist in the staff forum. 3 was permanently deleted at some point (it must have contained Satoshi's real name and address).