I don't really understand what you talking about but the only thing that comes close to an Easter egg
Is the words on the Genesis block on Chancellor on brink of bailout something like that.
I'm not sure if there is any wallet address that is speculated to belong to Satoshi with revealed Public key. None of those addresses has their public key on the blockchain explorer, a single sats hasn't been spent to reveal the public keys yet.
Yes there are addresses that fall on the patoshi pattern with known pubkeys
They made use of P2PK where the pubkey is directly included on the output script
Thus making it visible to everyone from the moment they were mined.
What you are talking about that needs to be spent is P2PKH (pay to public key Hash) difference with P2PK is the hashed pubkey.