It means there is a full trusted boot chain from the TPM to loading the immutabl...

It means there is a full trusted boot chain from the TPM to loading the immutable root filesystem: https://github.com/bottlerocket-os/bottlerocket/blob/develop...

Regular Linux distributions don't have this, even if Secure Boot is enabled: https://0pointer.net/blog/brave-new-trusted-boot-world.html