Blockstream CEO Adam Back posted a response to the reason why it is not Satoshi Nakamoto. He said that in 2013, I joined Bitcoin wizards IRC and asked a lot of questions to understand the details of Bitcoin. For example, address holding balances vs. utxo coins, etc. There are records in the logs of the IRC channel, so the developers in the channel are convinced that it is not me. I learned quickly and came up with schnorr signatures, transaction malleability fixes (similar to segwit), confidential transactions (now applied to Liquid Network), commitment TX, pooling decentralization (like stratum V2), client side verification, sidechains, etc later in 2013.