That might be too naive an opinion, even if you disagree with him, given the fact that he is literally one of the co-founders of the field of AI Safety and has been publishing research about it since early 00s.
He has, to my knowledge, one self-published paper of any value to the field of AI, and that is more properly classified as philosophy/logic/math on the topic of decision theory.
Yudkowsky is not an AI researcher. He calls himself an AI safety researcher, but he has almost no publications in that area either. He has no formal training or qualifications as such.
Yudkowsky has a cultish online following and has authored a decently good Harry Potter fanfic. That's it.
That might be too naive an opinion, even if you disagree with him, given the fact that he is literally one of the co-founders of the field of AI Safety and has been publishing research about it since early 00s.