I think there are few ways to answer it. First, Satoshi solved a very significant intellectual problem: how to allow a group of people, who may have antagonist

I think there are few ways to answer it. First, Satoshi solved a very significant intellectual problem: how to allow a group of people, who may have antagonistic members, to collude successfully. It is known as "The Byzantine Generals' Problem." What else does this person understand or have insight into? Second, people are innately curious. Who is this person and what motivates him or her? Was this done out of curiosity or financial gain or just plain "because I could?" Third, Satoshi is sitting on a huge cache of coins when he or she started the process. Is there any intent to use them? If someone could steal the keys to these blocks, it would a major "bank heist."