When I first read about TPM-based FDE on Linux[0], I was excited that the systemd guys were finally taking a step in the right direction - BitLocker/FileVault were standard on Windows/macOS for a long time by that point. FDE should be secure by default, dead-simple to set up (e.g. a checkbox in the installer that defaults to "enabled"), and painless for everyday use.

[0]: https://0pointer.de/blog/brave-new-trusted-boot-world.html

Then I read about the implementation details[0], and it's a complex bloody mess with an unending chain of brittle steps and edge cases, that are begging for a mistake and get exploited. So here we are.

I'm convinced that "measure the kernel" into "measure the initrd" into "show login screen" is all it should take.