The Objectivists I know hate hypotheticals and refuge to engage with them with the same dismissive tone used in your comment.
I may be missing something, as I don't really follow this "community" besides reading the occasional Slate Star Codex post or whatever.
But I don't see much ground for comparison here. SBF (who I assume you're referring to) was in much different position with regards to potential harm as a result of con man antics than EY is. (As far as I can tell).
SBF was managing billions of dollars. EY is not. If SBF turns out to be a scammer, real people lose money. If EY is a scammer... then so what? He publishes a bunch of blog posts crying doom about AI that suddenly look less sincere? To what end? I can't see a good reason at this time for assuming his reasons are anything less than what he claims they are.
As somewhat of a cynical person, I also find it funny that
> While I agree that the guy is somewhat shrill and his ideas are pretty out there, he really doesn't seem like a con artist from my standpoint.
I've heard this exact same sentiment about another popular Effective Altruist in the past year. I will let the reader guess which one.