Just because someone has satoshi`s keys does not mean they are satoshi.
If that is the case what do you suggest how someone could prove that he is Satoshi, if someone can move the coins from the early blocks and can sign a message from the genesis block he will be known as Satoshi, you can have any other narrative of your own regarding that but majority of the people will believe that only the creator can have those cryptographic keys, if you claim that someone could have stolen those, then there is nothing more to argue as these debates keep on coming
. You cannot convince everyone all the time and that will be the narrative.
I mean there is no real way to prove it.
yah moving some coins in those starter wallets may be a piece of evidence
talking on the satoshi forum account on this site may be a piece of evidence
Both could of been jacked by now.having copyright ownership could be forged by the patent office to have a earlier date.
So we will never really know, You will just have to have faith.
I doubt there is a video of satoshi creating everything, that would be pretty good evidence, but also video can be forged.