You are definitely right, considering that I am not a user of Trezor, I was not even aware that in 2021 they increased the maximum PIN length to even 50 digits, and they say that 39 digits is quite enough to protect the seed from hacking. It's actually a good thing for those who for some reason don't want to use a passphrase or maybe don't even know such an option exists - although it's an option they always recommend to advanced users.

We have a lot of cases where users wonder why they don't see anything on their balance even though they have the correct seed, and then it turns out that they actually added an extra password without which the seed creates a completely new set of addresses.

It might be a bit impractical to enter a PIN that's 39+ digits long, but for the average user it's probably easier than setting a passphrase.