[devops99]

We have had "FDE" and secure boot with TPM in higher-than-commercial (defense) and the higher end of commercial settings for Linux, BSD, and illumos since TPM 1.2 was available, and I'd have to dig in some places to confirm but probably before Windows did in actual practice anywhere (let alone officially).

Yeah, Debian/Ubuntu, Fedora, etc didn't have this, but as the saying goes: you get what you pay for. Although enough of the Gentoo users (the real Gentoo users) have such a thing had it around that time too, if they wanted it (and they tend to put together what they want).

Some essential context: if you think the "Linux community" is elitist, wait until you see the niche commercial (and higher) players. I'm probably an example of such, to be fair.