Is it really "guessing" a seed phrase if there's nothing in it? Lmao. What he's describing is him pretty much just like generating a wallet. The difficulty is actually in guessing a wallet address that someone actually owns and use.
And the first thing I thought was that he actually created two new wallets.
This whole story could only be taken seriously if he managed to access a wallet with funds or at least where there was a minimum of one transaction. Everything else is children's wet dreams.