It is a no-brainer, why post with another account when satoshi himself has an account here in the forum?  Besides in order to be acknowledged as an owner of the account satoshi if somehow he forgot his login details, he needs to sign a message from an address established as his (satoshi) in this forum proving that he is the same person.  He doesn't need to emphasize in his every post that he is satoshi.

Anyway better to be left satoshi anonymous than to be claimed by faketoshi.