Hardware Wallets do not protect your Bitcoins.

The hardware doesn't make your Bitcoins safer.

The software isnt running overly complicated code.

The only thing protecting your Bitcoins is the entropy & randomness generated using the Bip39 standard.

Only reason we use Hardware Wallets is to use our Bip39 derived seeds without exposing it to threats easily avoided by never allowing an Internet connected device to touch your seed.