It seems that physical access to the device will mean that the password will be hacked and therefore your coins will be lost.

I have a question, why is the PIN code sufficient? In other words, if a password of sufficient length is inserted, will the hacker easily gain access to the device?

Overall, with the cheap device price, generating seeds, keeping seeds/addresses, and destroying hardware wallet device would be especially convenient for those who hold millions of dollars and don't intend to use them periodically.