Its different because BitBox02 and Trezor Safe 3 both storing the seed on the MCU and not on the SE. Passport and Coldcard store the seed on the SE. If I'm wrong please correct me.
Secure elements are usually very simple dumb chips with only one or two functions, but not all secure elements are equal.
I think that Passport, Coldcard, Bitbox, Onekey, Keystone3 and maybe few more hardware wallets, all use the same (or similar) secure element now.
I still scratch a "tin foil hat tingling" at the thought of a secure element lacking full open source observation. Sure the software is going to remain open source, but a bad actor using a proprietary secure element has options "behind the curtain". [popcorn]
Optiga Trust M secure element IS open source with MIT license, and it is used for many other devices, not just for Trezor hardware wallet.