if he/she moves the original coins and proves that he/she is indeed Satoshi via technical competence and social consensus , then between the immense wealth and social status as the creator of Bitcoin their influence on the crypto world will be massive.

You can never decentralize power and wealth because they obey Power's law and also it happens organically and unspectacularly, it's simply a bunch of people agreeing that somebody is cool or what they are saying makes sense.

It snowballs from there and a couple of exponentials later that person is sitting on billions of dollars and a 70M people platform