I know surely within me that satoshi is even watching many things we are doing, and maybe still even investing too to test things around.
he could be moving on to other bigger projects which may also shock us in the future.
My opinion:
After 10 years of experience, he is now testing a new concept that has improved all old issues like speed, scalability
https://en.wikipedia.org/wiki/Bitcoin_scalability_problem. He will come back with Bitcoin 2.0 but not as Satoshi Nakamoto.