Satoshi had closed his cover very neatly, he wouldn't make anything that would give anyone else the opportunity to open the cover again and reveal his true identity. Yes, maybe Satoshi has done something new after his world shaking discovery has succeeded in changing people's views on investing, but who can say what he is doing and where he is now.
Satoshi may be on this forum using a pseudonym account or may be enjoying his retirement while monitoring Bitcoin price movements. If he moves on to something else, he is unlikely to create another Cryptocurrency that can give competition to Bitcoin. he knows, Bitcoin is the result of his extraordinary work, he will not create a competitor to Bitcoin and it is impossible to include his name in the Whitepaper of the new coin because if his coin fails to develop then his name will be at stake.
There is no reason for him to spend more time and create another cryptocurrency to compete with bitcoin, competing with his favorite product. Furthermore, bitcoin is still the leader and no one can compete with it, there is no reason for him to create a better version than bitcoin at this point.
He chose to remain completely anonymous, I thought he would never appear again in any form. More than 14 years have passed and bitcoin has gone through many challenges to become as successful as it is today, but he has never appeared even in those difficult times. Therefore, there is no reason for him to return when bitcoin is recognized and legalized by the government because he knows that returning to this point could directly affect bitcoin.
