I don't think Yudkowsky's influence in EA has much to do with Musk or Altman. His LessWrong blogging was already pretty widely read within EA ten years ago. (I

I don't think Yudkowsky's influence in EA has much to do with Musk or Altman. His LessWrong blogging was already pretty widely read within EA ten years ago. (I would also say his influence has decreased a lot over that time, as he is writing much less now, and there are a lot of other voices on AI risk.)