Thanks!
I will be taking a a look at that reference url. Does it also happen like this when you have like a 20-word seed collection associated with a hardware wallet?
Both my ledger nano S and my trezor use a 24 word seed, but yes, the principle should be the same... Only the seed words are used to create a master key, the pin code just exists to protect your hardware device.
If the recovery sheet containing the 24 words is ever stolen, the thief can empty your wallet without knowing your pin code... (unless you use a hidden wallet inside your trezor, this hidden wallet is actually generated using a passphrase on top of the seed... like a 25th seed word, like you assumed in your initial OP
link. But this is an advanced feature, not enabled by default)