Satoshi has created it and it is running as it should be.
So, like what deviser created in the past, Even they no longer exist, their creations are still ongoing until today like lamps, electrical, televisions, cars, etc.
This means, we don't need Satoshi anymore, because we can develop itself without his direction.
Bitcoin development has become increasingly rapid without satoshi. The Bitcoin networks are getting better after satoshi leave, this mean the bitcoin team is always work in line with what satoshi expected.