Lol, sorry... you're wrong. The question was posed as:
>there any support in OpenBSD, or indeed any Unix-based desktop/server operating system
That's a wide swath and TPM 1.2 was finalized in 2011, saying "of course" was perfectly fair. It's one thing to say that such a device, perhaps a specific revision from a specific manufacturer, might not be supported on a specific release of an even more specific distribution... but that wasn't the case.
Trolling and quibbling over a common colloquialism such as using the phrase "of course" is not constructive.