Eliezer was hyping AI back in the 1990s though. Really really hyping it. And by the time of the conversations with Sam and Elon in 2015, he had been employed full time as an AI researcher for 15 years.
Here is an example (written in year 2000) of Eliezer's hyping of AI:
>The Singularity holds out the possibility of winning the Grand Prize, the true Utopia, the best-of-all-possible-worlds - not just freedom from pain and stress or a sterile round of endless physical pleasures, but the prospect of endless growth for every human being - growth in mind, in intelligence, in strength of personality; life without bound, without end; experiencing everything we've dreamed of experiencing, becoming everything we've ever dreamed of being; not for a billion years, or ten-to-the-billionth years, but forever... or perhaps embarking together on some still greater adventure of which we cannot even conceive. That's the Apotheosis. If any utopia, any destiny, any happy ending is possible for the human species, it lies in the Singularity. There is no evil I have to accept because "there's nothing I can do about it". There is no abused child, no oppressed peasant, no starving beggar, no crack-addicted infant, no cancer patient, literally no one that I cannot look squarely in the eye. I'm working to save everybody, heal the planet, solve all the problems of the world.
http://web.archive.org/web/20010204095500/http://sysopmind.c...
Another example (written in 2001):
>The Plan to Singularity ("PtS" for short) is an attempt to describe the technologies and efforts needed to move from the current (2000) state of the world to the Singularity; that is, the technological creation of a smarter-than-human intelligence. The method assumed by this document is a seed AI, or self-improving Artificial Intelligence, which will successfully enhance itself to the level where it can decide what to do next.
>PtS is an interventionist timeline; that is, I am not projecting the course of the future, but describing how to change it. I believe the target date for the completion of the project should be set at 2010, with 2005 being preferable; again, this is not the most likely date, but is the probable deadline for beating other, more destructive technologies into play. (It is equally possible that progress in AI and nanotech will run at a more relaxed rate, rather than developing in "Internet time". We can't count on finishing by 2005. We also can't count on delaying until 2020.)
http://web.archive.org/web/20010213215810/http://sysopmind.c...
No longer is he hyping AI though: he's trying to get it shut down till (many decades from now) we become wise enough to handle it without killing ourselves.