All those Bitcoins are not dead at all. They are just lost somewhere in Blockchain locked on wallets and no one thief can hack them. I’m not sure about people’s philosophy towards “burning” BTC. Maybe in such a manner they reduce the number of coins.
What are you saying?
Not dead at all? Wallet? Thief? Hack?
The coins have been sent to the first person or bot finding and using a private key such that
RIPEMD-160(SHA256(public key)) = 0000000000000000000000000000000000000000