The problem with all the Faketoshis is the paradigm shift.
They claim to be Satoshi but then reveal motivations for the revelation that are not in line with what Satoshi said in his messages.
Like BitcoinFX said:
Oh, wait, no keys ... erm ... oh dear ...
Not your keys, not your coins ? [citation needed]
https://www.youtube.com/watch?v=gB4wrX2iICA
Use the wallet keys or PGP key to sign a message and we'll believe Satoshi.
The whole bitcoin system is designed around psuedo anonymity, cryptographic messaging and private keys.
The only way to even start to prove your identity is with a signed message.