Justin Nakamoto on Nostr: So also the hardware wallets have a security chip which has been proven to generate a ...

So also the hardware wallets have a security chip which has been proven to generate a key that is random. Although there are some who are paranoid about even those chips being "random enough" and those people generate their phrase using dice and the diceware lookup table. The seed phrase is just a friendly way of representing the actual 256 bit hexadecimal string which Bitcoin core actually uses.