This is not only a bad summary, it's extraordinarily toxic and uncharitable.
You (and probably I) are doing the same thing that you're criticizing Eliezer for. You're right, but don't do that. Be the change you wish to see in the world.
Let me make it clear that I'm not against venting, being angry, even saying to some people "dude, we're going to die", all that. Eliezer has put his whole life into this field and I don't think it's fair to say he shouldn't be angry from time to time. It's also not a good idea to pretend things are better than they actually are, and that includes regulating your emotional state to the point that you can't accurately convey things. But if the linchpin of LessWrong says that the field is being drowned by idiots pushing low-quality ideas (in so many words), then we shouldn't be surprised when even people who might have something to contribute decide to withhold those contributions, because they don't know whether or not they're the people doing the thing he's explicitly critiquing.
It seems to me like you have a blind spot regarding how your position as a community leader functions. If you, very well respected high status rationalist, write a long, angry post dedicated to showing everyone else that they can't do original work and that their earnest attempts at solving the problem are, at best, ineffective & distracting and you're tired of having to personally go critique all of their action plans... They stop proposing action plans. They don't want to dilute the field with their "noise", and they don't want you and others to think they're stupid for not understanding why their actions are ineffective or not serious attempts in the first place. I don't care what you think you're saying - the primary operative takeaway for a large proportion of people, maybe everybody except recurring characters like Paul Christiano, is that even if their internal models say they have a solution, they should just shut up because they're not you and can't think correctly about these sorts of issues.
[Redacted rant/vent for being mean-spirited and unhelpful]