To be fair, while I personally do perceive the SIAI as being arrogant, I haven't seen any public tantrums. As far as I can tell, all their public discourse has been quite civil.
The most significant example was the Roko incident. The relevant threads and comments were all censored during the later part of his tantrum. Not a good day in the life of Eliezer's reputation.
I tried to look up this Roko incident, and from what I could see, Eliezer just acted crazily towards saying something Eliezer thought was dangerous. So him deleting everything could be justified without him necessarily being egotistical.
But can you elaborate on what happened, please?
I intended Leveling Up in Rationality to communicate this:
But some people seem to have read it and heard this instead:
This failure (on my part) fits into a larger pattern of the Singularity Institute seeming too arrogant and (perhaps) being too arrogant. As one friend recently told me:
So, I have a few questions: