[patmorgan23]

TPM isn't just for secure boot. Windows utilizes it for Bitlocker full disk encryption.

It's just not widely used for other applications.

[cryptonector]

That's still essentially part of the boot process. You can't use dTPMs as HSMs for TLS or whatever because dTPMs are way too slow.

[sim7c00]

Thanks, that's interesting. as commenter noted i'd say this is part of the boot-process, but you are right, it's not technically secure boot related. booting securely != secure boot that's correct :)