Nice Video, The other day we friends were discussing the same thing. It seems it's an AI . Otherwise not moving BTC's from Creator's Wallet is strange.
If i had that many BTCs and Price reaches $20000, no matter how rich i am or how discrete i am, i would take out some BTC for myself.

The other theory could be if it's not AI, then simply either the creator is no longer with us or has forgotten his private key.

Any case it's a mystery and we wouldn't know.

But i Salute to whoever it is.

Good Job !