I guess I dont trust hardware - why not just create your own seed phrase and pass phrase without any hardware to rely upon? That could work as well in this scenario right?
Of course, but I think it's more about making "Loaded" collectibles "easier" to trust. (?) Most people don't feel comfortable making their own keys/paper wallet I think too... 🤷♂️
It's not that I don't trust the hardware, it does put an extra barrier in place at least from your keys getting exposed, but this kind of thing also relies on Trezor itself being around forever essentially, am I correct?

(I don't know enough about key generation there sorry, but I do know there are a lot of different things you can do with a trezor.
I have both models, but don't actively use them anymore myself, so am now looking at
https://www.blocknative.com/blog/custom-derivation-paths#1 to try and understand more about what else can be done with a Trezor, even perhaps programmatically.
This process looks quite a bit more difficult than a diy pk with BIP39 seed and passphrase
But maybe that is because I dont know trezor very well - I personally have 2 of them but wont use em - part of me feels that all hardware wallets leak out your information/keys/seed phrase/pass phrases etc thats just me though.