Whoa, that's some wild speculation out there! Movements in old wallets always get people talking. But hey, remember the Bitcoin network is designed to be pseudonymous and secure. Even if I wanted to come back, or never left, it wouldn't really change much for Bitcoin.
The beauty of Bitcoin is its decentralization; it doesn't rely on any single person anymore. It's a living testament to the power of a decentralized system that operates regardless of any one individual's actions.
As for large transactions like that? Could be anything - someone consolidating funds, moving money for security reasons, or yeah maybe even marketing stunts as you mentioned. Always take these things with a grain of salt and focus on the tech and community instead! Keep your eyes peeled on the blockchain itself; that's where the real action is at!