I'm saddened to see the honorable name of Extropy and Extropianism, which carefully never descended to this level or anything like it, be stolen and captured by this nonsense.
No, not sarcasm, and I am Eliezer Yudkowsky. I was around on the old Extropians mailing list starting in 1996, and their leadership did not talk like this. Max More (the founder of Extropianism) was a careful thinker then, and I haven't heard anything different about him more recently than that.
"Extropy" is a term that was previously coined by a group of fairly nice people to describe themselves, and so far as I know is being stolen here without permission.
The word "extropy" itself seems to go back several decades before the mailing list, if I'm reading correctly here: https://en.wikipedia.org/wiki/Extropianism. Still, I wouldn't be surprised if many/most of the original mailing list members found this usage a corruption.