There's a possibility that this also isn't the cause. Later in the thread, midmagic mentions that Linux, Bitcoin Core, and OpenSSL wouldn't be affected by the DARN instruction bug.

At any rate, it's good that Luke is openly talking about this. People shouldn't mock him, but should rather keep asking questions to get at the truth. As they say, "this is good for Bitcoin". To quote midmagic: "people dunking on Luke—you can get fucked. Luke's one of the rare people who would pull even you [who've dunked on him] out of the snowbank if you were freezing to death"