Where is he now?...
maybe satoshi is no longer alive or maybe satoshi has lost his memory? or maybe satoshi is arrested and incommunicable? are many possibilities. But the question that really matters now is:
- Would it make any difference if Satoshi showed up?
- Would it be that the community would obey Satoshi's orders on what path bitcoin should follow?
The difference would be that bitcoin would have a leader. See the example of ETH, TRX. Everyone has their leaders. Bitcoin would be something like that, except that everything Satoshi said would have a greater weight, since he created it all.