How does this prove anything? Of course someone had to be the second person to participate in the network after Satoshi.
- He was working on an electronic cash system before bitcoin, called RPOW in which he used proof-of-work, but as far as I read did not solve the double-spend problem. He created the first reusable proof of work. (Hal really worked on proof of work)
That's why he found Bitcoin so early - he was already interested in this field, he was participating in cypherpunks mailing list, he believed that a project like Bitcoin is possible.
- He lived in the same town where Dorian Nakamoto lived which can't be a coincidence. He either is Satoshi or someone got an eye on him.
This is a coincidence, because Dorian Nakamoto has nothing to do with Bitcoin or cryptography.
- There is no satoshi activity after Finney passed away. (I know, not that good argument)
Satoshi stopped being active long before Hal Finney passed away.